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May 14, 2017 Where: In Los Angeles. Photo: GUMU/GAMR / BACKGRID
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May 13, 2017 Where: At 102.7 KIIS FM's 2017 Wango Tango in Carson, California. Photo: Frazer Harrison/Getty Images
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May 1, 2017 Where: At the Met Gala in New York City. What: Custom Maison Margiela.
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April 15, 2017 Where: At the Moschino Candy Crush Desert Party hosted by Jeremy Scott in Coachella, California. Photo: 2017 Jerritt Clark
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April 6, 2017 Where: At the celebration of Chanel's Gabrielle Bag hosted by Caroline De Maigret and Pharrell Williams in Santa Monica. Photo: 20... more
April 6, 2017 Where: At the celebration of Chanel's Gabrielle Bag hosted by Caroline De Maigret and Pharrell Williams in Santa Monica. Photo: 2017 Getty Images
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March 18, 2017 Where: At The Human Rights Campaign Los Angeles Gala Dinner. Photo: Christopher Polk/Getty Images for Human Rights Campaign
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March 5, 2017 Where: At the iHeartRadio Music Awards. Photo: Jesse Grant/Getty Images for iHeartMedia
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February 22, 2017 Where: At the Universal Music Party for The BRIT Awards in London. Photo: 2017 Getty Images
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December 7, 2016 Where: At the premiere of 'Office Christmas Party' in Westwood. Photo: 2016 Albert L. Ortega
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November 29, 2016 Where: At the UNICEF Snowflake Ball in New York City. Photo: 2016 Kevin Mazur
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November 15, 2016 Where: At the Capitol Records 75th Anniversary Gala in Los Angeles. Photo: 2016 Steve Granitz
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October 26, 2016 Where: At ‘The 2016 Vogue/CFDA Fashion Fund Finalists Show and Tea Party’ in Los Angeles. Photo: Jeff Vespa/Getty Images for CF... more
October 26, 2016 Where: At ‘The 2016 Vogue/CFDA Fashion Fund Finalists Show and Tea Party’ in Los Angeles. Photo: Jeff Vespa/Getty Images for CFDA/Vogue
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October 15, 2016 Where: At the Children's Hospital Los Angeles 'Once Upon a Time' Gala. Photo: Alberto E. Rodriguez/Getty Images
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April 13, 2016 Where: At Sean Parker And The Parker Foundation Launch The Parker Institute For Cancer Immunotherapy Gala in Los Angeles. Photo: ... more
April 13, 2016 Where: At Sean Parker And The Parker Foundation Launch The Parker Institute For Cancer Immunotherapy Gala in Los Angeles. Photo: Steve Granitz/WireImage
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March 2, 2016 Where: In New York City. Photo: Josiah Kamau/BuzzFoto via Getty Images
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November 12, 2015 Where: At the GO Campaign Gala in Beverly Hills. Photo: Joe Scarnici/Getty Images
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September 16, 2015 Where: At the Harper's Bazaar ICONS Event in New York City. Photo: Jamie McCarthy/Getty Images
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September 8, 2015 Where: At the premiere of Jeremy Scott: The People's Designer . Photo: Alberto E. Rodriguez/Getty Images
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June 18, 2015 Where: At the Moschino show during the Pitti Uomo in Florence, Italy. Photo: Vittorio Zunino Celotto/Getty Images
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May 4, 2015 Where: At the Met Gala in New York City. What: Dress Jeremy Scott for Moschino. Photo: 2015 Getty Images
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April 11, 2015 Where: At Soho Desert House in La Quinta, California. Photo: Michael Bezjian/Getty Images
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March 8, 2015 Where: With Johnny Wujek at the Givenchy show as part of the Paris Fashion Week Womenswear Fall/Winter 2015/2016. Photo: Dominique... more
March 8, 2015 Where: With Johnny Wujek at the Givenchy show as part of the Paris Fashion Week Womenswear Fall/Winter 2015/2016. Photo: Dominique Charriau/Getty Images
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February 22, 2015 Where : In Milan.
Photo: © www.splashnews.com
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February 1, 2015 Where: Performing at the Super Bowl Halftime Show. What: Dress by Moschino. Photo: Kevin C. Cox/2015 Getty Images
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January 29, 2015 Where: At the Pepsi Super Bowl XLIV Halftime Show Press Conference in Phoenix.
What: Skirt and top by RVN.
Photo: 2015... more
January 29, 2015 Where: At the Pepsi Super Bowl XLIV Halftime Show Press Conference in Phoenix.
What: Skirt and top by RVN.
Photo: 2015 Kevin Mazur
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January 22, 2015 Where: At the Daily Front Row Fashion Los Angeles Awards
What : Dress by Moschino.
Photo: 2015 Charley Gallay
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November 26, 2014 Where: At the ARIA Awards in Sydney, Australia. Photo: 2014 Don Arnold
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October 30, 2014 Where: At Kate Hudson's Halloween party in LA. Photo: ���?���� www.splashnews.com
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May 25, 2014 Where: At Radio 1's Big Weekend in Glasgow, Scotland. Photo: Dave J Hogan/2014 Dave J Hogan
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April 13, 2014 Where: At the Coachella Valley Music & Arts Festival. Photo: 2014 Getty Images
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April 8, 2014 Where: At a press event for Congressional Candidate Marianne Williamson in L.A. Photo: Tibrina Hobson/2014 Tibrina Hobson
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March 29, 2014 Where: At MOCA's 35th Anniversary Gala presented by Louis Vuitton in Los Angeles, California. Photo: 2014 Getty Images
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March 4, 2014 Where: At the Telstra HQ in Sydney, Australia. Photo: Don Arnold/2014 Don Arnold
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February 18, 2014 Where: At the Elle Style Awards in London, England. Photo: 2014 Mike Marsland
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January 27, 2013 Where: At "The Night that Everything Changed: A Grammy Salute to the Beatles" in LA
What: Dress by Dolce and Gabbana ... more
January 27, 2013 Where: At "The Night that Everything Changed: A Grammy Salute to the Beatles" in LA
What: Dress by Dolce and Gabbana
Photo: Frazer Harrison/2014 Getty Images
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December 27, 2013 Where: At the opening of "Britney: Piece of Me" in Las Vegas, Nevada. Photo: Ethan Miller/2013 Getty Images
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December 3, 2013 Where: At the UNICEF Snowflake Ball in New York.
What: Naeem Khan gown and cape. Photo: Stephen Lovekin/2013 Getty Images
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November 24, 2013 Where: Performing at the American Music Awards, in Los Angeles, California. Photo: 2013 Michael Tran
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November 24, 2013 Where: At the American Music Awards, in Los Angeles, California. Photo: 2013 Jeffrey Mayer
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October 1, 2013 Where: At Grand Palais for the Spring 2014 Chanel show.
What: Dress by Chanel.
Photo: Pascal Le Segretain/2013 Getty I... more
October 1, 2013 Where: At Grand Palais for the Spring 2014 Chanel show.
What: Dress by Chanel.
Photo: Pascal Le Segretain/2013 Getty Images
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September 25, 2013 Where: At the "Killer Queen" fragrance launch in Berlin.
What: Outfit by Alice + Olivia. Photo: BREUEL-BILD/Juri ... more
September 25, 2013 Where: At the "Killer Queen" fragrance launch in Berlin.
What: Outfit by Alice + Olivia. Photo: BREUEL-BILD/Juri Reetz/© Corbis. All Rights Reserved.
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August 25, 2013 Where: At the VMA Awards.
What: Dress by Emanuel Ungaro
Photo: Jamie McCarthy/2013 Getty Images
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July 28, 2013 Where: At the Regency Village Theatre in Westwood, Calif. for The Smurfs 2 premiere.
What: Dress by Tadashi Shoji, shoes by Pedro... more
July 28, 2013 Where: At the Regency Village Theatre in Westwood, Calif. for The Smurfs 2 premiere.
What: Dress by Tadashi Shoji, shoes by Pedro Garcia. Photo: 2013 Getty Images
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May 6, 2013 Where: At the Costume Institute Gala "PUNK: Chaos to Couture" exhibition at the Metropolitan Museum of Art in New York City... more
May 6, 2013 Where: At the Costume Institute Gala "PUNK: Chaos to Couture" exhibition at the Metropolitan Museum of Art in New York City.
What: Dress by Dolce & Gabbana. Photo: Jamie McCarthy/2013 Getty Images
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May 5, 2013 Where: At a screening of The Great Gatsby in New York City.
Photo: Rob Kim/2013 Getty Images
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April 27, 2013 Where: At the White House Correspondents' Association Dinner in Washington D.C.
What: Dress by Giambattista Valli.
Photo:... more
April 27, 2013 Where: At the White House Correspondents' Association Dinner in Washington D.C.
What: Dress by Giambattista Valli.
Photo: Dimitrios Kambouris/2013 Getty Images
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April 22, 2013 Where: At a photocall for The Smurfs 2 in Cancun, Mexico.
What: Dress by Monique Lhuillier.
Photo: Christopher Polk/... more
April 22, 2013 Where: At a photocall for The Smurfs 2 in Cancun, Mexico.
What: Dress by Monique Lhuillier.
Photo: Christopher Polk/2013 Getty Images
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April 13, 2013 Where: At a Lacoste pool party in Thermal, California.
What: Top and skirt by Dolce & Gabbana.
Photo: Jonathan Leibson/2... more
April 13, 2013 Where: At a Lacoste pool party in Thermal, California.
What: Top and skirt by Dolce & Gabbana.
Photo: Jonathan Leibson/2013 Getty Images
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April 12, 2013 Where: At Harper's BAZAAR Coachella poolside fete in Palm Springs, California.
Photo: John Sciulli/2013 Getty Images
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March 23, 2013 Where: At the Nickelodeon Kids' Choice Awards in Los Angeles, California.
What: Dress by Hervé Léger By Max A... more
March 23, 2013 Where: At the Nickelodeon Kids' Choice Awards in Los Angeles, California.
What: Dress by Hervé Léger By Max Azria.
Photo: Frazer Harrison/2013 Getty Images
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February 13, 2013 Where: At the Tommy Hilfiger West Coast flagship opening after-party in West Hollywood, California.
Photo: Mark Davis/20... more
February 13, 2013 Where: At the Tommy Hilfiger West Coast flagship opening after-party in West Hollywood, California.
Photo: Mark Davis/2013 Getty Images
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February 10, 2013 Where: At the Grammy Awards in Los Angeles, California.
What: Dress by Gucci.
Photo: Jason Merritt/2013 Getty Images
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February 9, 2013 Where: At Clive Davis & The Recording Academy's pre-Grammy's party in Los Angeles, California.
What : Dress by Ra... more
February 9, 2013 Where: At Clive Davis & The Recording Academy's pre-Grammy's party in Los Angeles, California.
What : Dress by Rafael Cennamo.
Photo: Jason Merritt/2013 Getty Images
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February 8, 2013 Where : At MusiCares Person Of The Year honoring Bruce Springsteen in Los Angeles, California.
What : Dress by Alexander Mc... more
February 8, 2013 Where : At MusiCares Person Of The Year honoring Bruce Springsteen in Los Angeles, California.
What : Dress by Alexander McQueen.
Photo: Larry Busacca/2013 Getty Images
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January 21, 2013 Where: With John Mayer at the presidential inauguration in Washington, D.C.
What: Coat by Rodarte.
Photo: Alex Wong/2... more
January 21, 2013 Where: With John Mayer at the presidential inauguration in Washington, D.C.
What: Coat by Rodarte.
Photo: Alex Wong/2013 Getty Images
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January 19, 2013 Where : Performing at the Children Gather For Kid's Inaugural Concert in Washington, D.C.
Photo: Joe Raedle/2013 Getty Images
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January 9, 2013 Where: At the People's Choice Awards in Los Angeles, California.
What : Dress by Valentino.
Photo: Jason Kempin/201... more
January 9, 2013 Where: At the People's Choice Awards in Los Angeles, California.
What : Dress by Valentino.
Photo: Jason Kempin/2013 Getty Images
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December 4, 2012 Where: At a celebration of Carole King in Hollywood, California.
What : Dress by YSL.
Photo: Jason Merritt/2012 Getty Im... more
December 4, 2012 Where: At a celebration of Carole King in Hollywood, California.
What : Dress by YSL.
Photo: Jason Merritt/2012 Getty Images
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November 27, 2012 Where: At the Unicef SnowFlake Ball in New York City.
What: Dress by Naeem Khan.
Photo: Stephen Lovekin/2012 Gett... more
November 27, 2012 Where: At the Unicef SnowFlake Ball in New York City.
What: Dress by Naeem Khan.
Photo: Stephen Lovekin/2012 Getty Images
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November 16, 2013 Where: At the Dream Foundation Celebration in Santa Barbara, California.
What: Dress by Dolce & Gabbana.
Phot... more
November 16, 2013 Where: At the Dream Foundation Celebration in Santa Barbara, California.
What: Dress by Dolce & Gabbana.
Photo: Charley Gallay/2012 Getty Images
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November 3, 2012 Where: Performing at a campaign rally for President Barack Obama in Milwaukee, Wisconsin.
Photo: Scott Olson/2012 G... more
November 3, 2012 Where: Performing at a campaign rally for President Barack Obama in Milwaukee, Wisconsin.
Photo: Scott Olson/2012 Getty Images
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October 25, 2012 Where : At a s CFDA/Vogue Fashion Fund Event in New York City.
What : Dress by Wes Gordon.
Photo: Jeff Vespa/2012 Jeff Vespa
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October 24, 2012 Where: Performing at a campaign rally for Barack Obama in Las Vegas, Nevada.
Photo: John Gurzinski/2012 Getty Imag... more
October 24, 2012 Where: Performing at a campaign rally for Barack Obama in Las Vegas, Nevada.
Photo: John Gurzinski/2012 Getty Images
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October 16, 2012 Where: With John Mayer in New York City.
Photo: James Devaney/2012 James Devaney
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October 16, 2012 Where: With John Mayer leaving the Soho House in New York City.
What : Jacket by Free People.
Photo: Alo Ceballos/2012 Alo Ce... more
October 16, 2012 Where: With John Mayer leaving the Soho House in New York City.
What : Jacket by Free People.
Photo: Alo Ceballos/2012 Alo Ceballos
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October 13, 2012 Where : At Comedy Central's Night Of Too Many Stars in New York City.
What : Dress by Gucci. Photo: Dimitrios Kambouris/2012 Get... more
October 13, 2012 Where : At Comedy Central's Night Of Too Many Stars in New York City.
What : Dress by Gucci. Photo: Dimitrios Kambouris/2012 Getty Images
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July 30, 2012 Where: At a a press conference for Katy Perry-Part of Me 3D , in Rio de Janeiro, Brazil.
What: Dress by Versus.
Photo: MARC... more
July 30, 2012 Where: At a a press conference for Katy Perry-Part of Me 3D , in Rio de Janeiro, Brazil.
What: Dress by Versus.
Photo: MARCOS DE PAULA/© Corbis. All Rights Reserved.
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July 3, 2012 Where: At the premiere of Katy Perry Part Of Me in London, England.
What: Dress by Marchesa.
Photo: Ian Gavan/2012 Getty Im... more
July 3, 2012 Where: At the premiere of Katy Perry Part Of Me in London, England.
What: Dress by Marchesa.
Photo: Ian Gavan/2012 Getty Images
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June 30, 2012 Where: At the premiere of Katy Perry: Part Of Me in Sydney, Australia.
What: Dress by Versace.
Photo: Brendon Thorne/2012 ... more
June 30, 2012 Where: At the premiere of Katy Perry: Part Of Me in Sydney, Australia.
What: Dress by Versace.
Photo: Brendon Thorne/2012 Getty Images
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June 26, 2012 Where: At a Katy Perry: Part Of Me performance in Hollywood, California.
Photo: Kevin Winter/2012 Getty Images
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June 26, 2012 Where: At the premiere of Katy Perry: Part Of Me in Hollywood, California.
What: Dress by Dolce & Gabbana.
Photo: Jaso... more
June 26, 2012 Where: At the premiere of Katy Perry: Part Of Me in Hollywood, California.
What: Dress by Dolce & Gabbana.
Photo: Jason Merritt/2012 Getty Images
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June 17, 2012 Where: MuchMusic Video Awards in Toronto, Canada.
Photo: George Pimentel/2012 George Pimentel
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June 12, 2012 Where At City of Hope's Music And Entertainment Industry Group Honors Bob Pittman in Los Angeles, California.
What: Dess is&... more
June 12, 2012 Where At City of Hope's Music And Entertainment Industry Group Honors Bob Pittman in Los Angeles, California.
What: Dess is Vintage Nolan Miller.
Photo: Frederick M. Brown/2012 Getty Images
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May 10, 2012 Where: At the NARM Music Biz Awards dinner party in Century City, California.
Photo: Jason Merritt/2012 Getty Images
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April 18, 2012 Where: At the ASCAP POP Music Awards in Hollywood, California.
What: Dress by Temperley London.
Photo: John M. Helle... more
April 18, 2012 Where: At the ASCAP POP Music Awards in Hollywood, California.
What: Dress by Temperley London.
Photo: John M. Heller/2012 Getty Images
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April 13, 2012 Where: At the Details at Midnight party presented by Hennessy V.S in Rancho Mirage, California.
Photo: John Sciulli/2012 Wi... more
April 13, 2012 Where: At the Details at Midnight party presented by Hennessy V.S in Rancho Mirage, California.
Photo: John Sciulli/2012 WireImage
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March 31, 2012 Where: At the Nickelodeon Kids' Choice Awards in Los Angeles, California.
Photo: Alberto E. Rodriguez/2012 Getty Images
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March 22, 2012 Where : At the German Music Awards in Berlin, Germany.
Photo: Eventpress Herrmann/© Corbis. All Rights Reserved.
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March 7, 2012 Where: At the Miu Miu Fall 2012 show in Paris, France.
Photo: Pascal Le Segretain/2012 Getty Images
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March 3, 2012 Where: At the Viktor & Rolf Fall 2012 showin Paris, France.
Photo: Pascal Le Segretain/2012 Getty Images
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February 26, 2012 Where: At the Elton John AIDS Foundation's Oscar Viewing Party in Los Angeles, California.
Photo: Frederick M. Brown/201... more
February 26, 2012 Where: At the Elton John AIDS Foundation's Oscar Viewing Party in Los Angeles, California.
Photo: Frederick M. Brown/2012 Getty Images
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February 12, 2012 Where: Performing at the Grammy Awards in Los Angeles, California.
Photo: Kevin Winter/2012 Getty Images
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February 12, 2012 Where: With Rihanna at the Grammy Awards in Los Angeles, California.
Photo: Larry Busacca/2012 Getty Images
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February 12, 2012 Where: At the Grammy Awards in Los Angeles, California.
Photo: Jason Merritt/2012 Getty Images
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February 11, 2012 Where : At the Roc Nation Pre-Grammy Brunch, in Los Angeles, California.
Photo: VALERIE MACON/2012 AFP
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February 10, 2012 Where: At the MusiCares Person of the Year Tribute to Paul McCartney in Los Angeles, California.
Photo: Jason Merritt/20... more
February 10, 2012 Where: At the MusiCares Person of the Year Tribute to Paul McCartney in Los Angeles, California.
Photo: Jason Merritt/2012 Getty Images
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February 5, 2012 Where: At the Super Bowl XLVI Pregame Show at Lucas Oil Stadium in Indianapolis, Indiana.
Photo: Christopher Polk/2... more
February 5, 2012 Where: At the Super Bowl XLVI Pregame Show at Lucas Oil Stadium in Indianapolis, Indiana.
Photo: Christopher Polk/2012 Getty Images
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December 3, 2011 Where: With Russell Brand at the 'Change Begins Within' Benefit Celebration in Los Angeles, California.
Photo: Jaso... more
December 3, 2011 Where: With Russell Brand at the 'Change Begins Within' Benefit Celebration in Los Angeles, California.
Photo: Jason Merritt/2011 Getty Images
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November 20, 2011 Where: At the American Music Award in Los Angeles, California.
Photo: Hubert Boesl/© Corbis. All Rights Reserved.
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August 28, 2011 Where: At the TV Video Music Awards in Los Angeles, California.
Photo: Jason Merritt/2011 Getty Images
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August 28, 2011 Where : At the MTV Video Music Awards in Los Angeles, California.
Photo: © RD / Orchon / Retna Digital./© RD / Orchon / Retna Di... more
August 28, 2011 Where : At the MTV Video Music Awards in Los Angeles, California.
Photo: © RD / Orchon / Retna Digital./© RD / Orchon / Retna Digital.
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July 24, 2011 Where: At the premiere of The Smurfs in New York City.
Photo: Jemal Countess/2011 Getty Images
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June 11, 2011 Where: Performing during her 'California Dreams Tour 2011' in Sunrise, Florida.
Photo: Kristian Dowling/2011 Kristian ... more
June 11, 2011 Where: Performing during her 'California Dreams Tour 2011' in Sunrise, Florida.
Photo: Kristian Dowling/2011 Kristian Dowling
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June 10, 2011 Where: Backstage during the North American leg of her 'California Dreams Tour 2011' in Tampa, Florida.
Photo: Kristian... more
June 10, 2011 Where: Backstage during the North American leg of her 'California Dreams Tour 2011' in Tampa, Florida.
Photo: Kristian Dowling/2011 Kristian Dowling
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May 1, 2011 Where : At the Logie Awards at Crown Palladium in Melbourne, Australia.
Photo: Scott Barbour/2011 Getty Images
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April 30, 2011 Where: At the launch of her new fragrance 'Purr' in Sydney, Australia.
Photo: Graham Denholm/2011 Getty Images
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March 17, 2011 Where : Performing during her 'California Dreams' UK tour in London, England.
Photo: Neil Lupin/... more
March 17, 2011 Where : Performing during her 'California Dreams' UK tour in London, England.
Photo: Neil Lupin/2011 Getty Images
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February 13, 2011 Where : At the Grammy Awards in Los Angeles, California.
Photo: ROBYN BECK/2011 AFP
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December 13, 2010 Where: At the David Lynch Foundation's Change Begins Within Benefit in New York City.
Photo: Michael Loccisano/2010 Gett... more
December 13, 2010 Where: At the David Lynch Foundation's Change Begins Within Benefit in New York City.
Photo: Michael Loccisano/2010 Getty Images
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December 10, 2010 Where: At Z100's Jingle Ball in New York City.
Photo: Jason Kempin/2010 Getty Images
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December 3, 2010 Where : At "Vh1 Divas Salute the Troops" in San Diego, California.
Photo: Matt Sayles/© Corbis. All Right... more
December 3, 2010 Where : At "Vh1 Divas Salute the Troops" in San Diego, California.
Photo: Matt Sayles/© Corbis. All Rights Reserved.
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December 3, 2010 Where: At VH1 Divas Salute The Troops in Miramar, California.
Photo: Kevin Winter/2010 Getty Images
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November 21, 2010 Where: At the American Music Awards in Los Angeles, California. &nbs... more
November 21, 2010 Where: At the American Music Awards in Los Angeles, California.
Photo: Chris Pizzello/© Corbis. All Rights Reserved.
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November 10, 2010 Where: At the Victoria's Secret Fashion Show in New York City.
Photo: Theo Wargo/2010 Getty Images
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November 10, 2010 Where: Performing at the Victoria's Secret Fashion Show in New York City.
Photo: Scott McDermott/© Corbis. All Rights R... more
November 10, 2010 Where: Performing at the Victoria's Secret Fashion Show in New York City.
Photo: Scott McDermott/© Corbis. All Rights Reserved.
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November 10, 2010 Where: At the Victoria's Secret Fashion Show in New York City.
Photo: Stephen Lovekin/2010 Getty Images
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November 7, 2010 Where: At the MTV Europe Music Awards in Madrid, Spain.
Photo: Hubert Bo... more
November 7, 2010 Where: At the MTV Europe Music Awards in Madrid, Spain.
Photo: Hubert Boesl/© Corbis. All Rights Reserved.
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September 12, 2010 Where : At the MTV Video Music Awards in Los Angeles, California.
Photo: Steve Granitz
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August 8, 2010 Where: At the Teen Choice Awards in Los Angeles, California.
Photo: Kevin Mazur/TCA 2010/2010 Kevin Mazur
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June 20, 2010 Where: At the MuchMusic Video Awards in Toronto, Canada.
Photo: George Pimentel/2010 George Pimentel
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June 6, 2010 Where : At the MTV Movie Awards in Universal City, California.
Photo: Jason Merritt/2010 Getty Images
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May 3, 2010 Where: At the Costume Institute Gala 'American Woman: Fashioning a National Identity' exhibition at The Metropolitan Museu... more
May 3, 2010 Where: At the Costume Institute Gala 'American Woman: Fashioning a National Identity' exhibition at The Metropolitan Museum of Art in New York City.
What: Dress by Circuit.
Photo: Larry Busacca/2010 Getty Images
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April 21, 2010 Where: At the ASCAP POP Music Awards in Hollywood, California.
Photo: Juan Ramon .
Juan Ramon .... more
April 21, 2010 Where: At the ASCAP POP Music Awards in Hollywood, California.
Photo: Juan Ramon .
Juan Ramon ./© Corbis. All Rights Reserved.
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March 27, 2010 Where: At the Nickelodeon Kids' Choice Awards in Los Angeles, California.
Photo: Chris Pizzello/© Corbis. All Rights Rese... more
March 27, 2010 Where: At the Nickelodeon Kids' Choice Awards in Los Angeles, California.
Photo: Chris Pizzello/© Corbis. All Rights Reserved.
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March 7, 2010 Where: At the Vanity Fair Oscar Party in West Hollywood, California.
Photo: Gregg DeGuire/2010 Gregg DeGuire
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January 31, 2010 Where: At the Grammy Awards in Los Angeles, California.
Photo: Jason Merritt/2010 Getty Images
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November 5, 2009 Where: At the MTV Europe Music Awards in Berlin, Germany.
Photo: Jeff Kravitz/2009 Jeff Kravitz
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November 5, 2009 Where: At the MTV Europe Music Awards in Berlin, Germany.
Photo: Dave M. Benett/2009 Getty Images
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October 7, 2009 Where: Backstage at the Louis Vuitton Spring 2010 show in Paris, France.
Photo: Pascal Le Segretain/2009 Getty Images
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August 23, 2009 Where: Performing at V Festival in Hylands Park in Chelmsford, England.
Photo: Rune Hellestad/
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July 28, 2009 Where: At a post concert party at The Griffin in New York City.
Photo: Amy Sussman/2009 Getty Images
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June 7, 2009 Where: At the Capital Radio Summertime Ball in London, England.
Photo: Eamonn McCorma... more
June 7, 2009 Where: At the Capital Radio Summertime Ball in London, England.
Photo: Eamonn McCormack/2009 Getty Images
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May 4, 2009 Where: At the Costume Institute Gala 'The Model as Muse: Embodying Fashion' exhibition at The Metropolitan Museum of Art in New York ... more
May 4, 2009 Where: At the Costume Institute Gala 'The Model as Muse: Embodying Fashion' exhibition at The Metropolitan Museum of Art in New York City.
Photo: Stephen Lovekin/2009 Getty Images
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May 6, 2009 Where: At a People Magazine party in New York City.
Photo: Theo Wargo/2009 Getty Images
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April 9, 2009 Where: At Paper Magazine's 'Beautiful People' party in New York City.
Photo: Bryan Bedder/2009 Getty Images
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February 18, 2009 Where : At the Brit Awards in London, England.
Photo: Gareth Cattermole/2009 Getty Images
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February 8, 2009 Where: At the Grammy Awards in Los Angeles, California.
Photo: Larry Busacca/2009 The Recording Academy
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February 8, 2009 Where: Performing at the Grammy Awards in Los Angeles, California.
Photo: ROBYN BECK/2009 AFP
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February 8, 2009 Where: At the Grammy Awards in Los Angeles, California.
Photo: Michael Tran/2009 Michael Tran
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January 17, 2009 Where: At the NRJ Music Awards in Cannes, France.
Photo: Alain BENAINOUS/Alain BENAINOUS/GAMMA
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January 8, 2009 Where: At the Critics' Choice Awards in Santa Monica, California.
Photo: Matt Sayles/© Corbis. All Rights Re... more
January 8, 2009 Where: At the Critics' Choice Awards in Santa Monica, California.
Photo: Matt Sayles/© Corbis. All Rights Reserved.
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December 12, 2008 Where: At Z100's Jingle Ball at Madison Square Garden in New York City.
Photo: Bryan ... more
December 12, 2008 Where: At Z100's Jingle Ball at Madison Square Garden in New York City.
Photo: Bryan Bedder/2008 Getty Images
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November 6, 2008 Where: At the MTV Europe Music Awards held at at the Echo Arena in Liverpool, England.
Photo: Gareth Cattermo... more
November 6, 2008 Where: At the MTV Europe Music Awards held at at the Echo Arena in Liverpool, England.
Photo: Gareth Cattermole/2008 Getty Images
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October 16, 2008 Where: Performing at the 'Los Premios MTV Latin America 2008' Awards in Guadalajara, Mexico.
Photo: Kevin Wi... more
October 16, 2008 Where: Performing at the 'Los Premios MTV Latin America 2008' Awards in Guadalajara, Mexico.
Photo: Kevin Winter/2008 Getty Images
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September 17, 2008 Where: At a Katy Perry Concert at Fritzclub at the Postbahnhof in Berlin, Germany.
Photo: Florian Seefried/2008 Florian... more
September 17, 2008 Where: At a Katy Perry Concert at Fritzclub at the Postbahnhof in Berlin, Germany.
Photo: Florian Seefried/2008 Florian Seefried
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September 7, 2008 Where: At the MTV Video Music Awards in Los Angeles, California.
Photo: Chris Pizzello/© Corbis. All Rights... more
September 7, 2008 Where: At the MTV Video Music Awards in Los Angeles, California.
Photo: Chris Pizzello/© Corbis. All Rights Reserved.
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June 17, 2008 Where : At the Katy Perry record release party for 'One of the Boys' in Los Angeles, California.
Photo: Jesse Grant/20... more
June 17, 2008 Where : At the Katy Perry record release party for 'One of the Boys' in Los Angeles, California.
Photo: Jesse Grant/2008 Getty Images
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June 14, 2008 Where: At the Kira Plastinina U.S.launch party in Los Angeles, California.
Photo: DiMaio/© Corbis. All Rights Reserved.
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June 9, 2008 Where: At MTV's TRL in New York City.
Photo: Scott Gries/2008 Getty Images
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May 16, 2008 Where : DJing at Gallery Bar in New York City.
Photo: Roger Kisby/2008 Getty Images
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November 16, 2006 Where: At the launch party for the Nintendo 'Wii' game console in Los Angeles, California.
Photo: Toby Canham/2006... more
November 16, 2006 Where: At the launch party for the Nintendo 'Wii' game console in Los Angeles, California.
Photo: Toby Canham/2006 Getty Images
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April 20, 2006 Where: At the Vanity Fair Svedka Erotica Reading Series at club Shag in Hollywood, California.
Photo: Matthew Simmons... more
April 20, 2006 Where: At the Vanity Fair Svedka Erotica Reading Series at club Shag in Hollywood, California.
Photo: Matthew Simmons/2006 Getty Images
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February 27, 2005 Where: At The Abbey/Esquire Magazine 'The Envelope Please' Oscar Viewing Party in West Hollywood, California. ... more
February 27, 2005 Where: At The Abbey/Esquire Magazine 'The Envelope Please' Oscar Viewing Party in West Hollywood, California.
Photo: Amanda Edwards/2005 Getty Images
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November 14, 2004 Where: At Clive Davis Hosts A Celebration of The American Music Awards in Beverly Hills, California.
Photo: Jean-Paul A... more
November 14, 2004 Where: At Clive Davis Hosts A Celebration of The American Music Awards in Beverly Hills, California.
Photo: Jean-Paul Aussenard
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September 25, 2002 Where : Posing with Glen Ballard during a portrait session in West Hollywood, California.
Photo: Lester Cohen/2002 Leste... more
September 25, 2002 Where : Posing with Glen Ballard during a portrait session in West Hollywood, California.
Photo: Lester Cohen/2002 Lester Cohen