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Taylor Swift What: Dress by Louis Vuitton. Photo: Larry Busacca/2016 Getty Images
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Beyoncé What: Dress by Givenchy. Photo: Larry Busacca/2016 Getty Images
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Kim Kardashian What: Dress by Balmain. Photo: Larry Busacca/2016 Getty Images
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Nicki Minaj What: Dress by Moschino. Photo: Larry Busacca/2016 Getty Images
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Lady Gaga What: Outfit by Atelier Versace. Photo: Larry Busacca/2016 Getty Images
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Zoe Saldana What: Dress by Dolce & Gabanna. Photo: Larry Busacca/2016 Getty Images
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Alicia Vikander What: Dress by Louis Vuitton. Photo: Larry Busacca/2016 Getty Images
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Rita Ora What: Dress by Vera Wang. Photo: Larry Busacca/2016 Getty Images
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Solange Knowles What: Dress by David LaPort. Photo: Dimitrios Kambouris/2016 Getty Images
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Jared Leto, Florence Welch What: Both in Gucci. Photo: Jamie McCarthy/2016 FilmMagic
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Kendall Jenner What: Dress Atelier Versace.
Photo: Dimitrios Kambouris/2016 Getty Images
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Madonna What: Dress by Givenchy. Photo: Larry Busacca/2016 Getty Images
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Kate Bosworth What: Dress by Dolce & Gabbana.
Photo: Dimitrios Kambouris/2016 Getty Images
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Michelle Monaghan What: Dress by Rosie Assoulin. Photo: Jamie McCarthy/2016 FilmMagic
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Dakota Johnson What: Dress by Gucci. Photo: Jamie McCarthy/2016 FilmMagic
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Zayn Malik, Gigi Hadid What: Zayn wears Versace; Gigi wears a dress by Tommy Hilfiger.
Photo: Jamie McCarthy/2016 FilmMagic
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FKA Twigs, Robert Pattinson What: FKA Twigs wears a dress by Versace; Robert Pattinson wears Dior.
Photo: Larry Busacca/2016 Getty Images
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Lupita Nyong'o What: Dress by Calvin Klein Collection. Photo: Jamie McCarthy/2016 FilmMagic
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Lorde What: Dress by Valentino. Photo: Jamie McCarthy/2016 FilmMagic
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Willow Smith, Jaden Smith What: Willow wears Chanel outfit; Jaden wears outfit by Louis Vuitton.
Photo: Larry Busacca/2016 Getty Images
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Jenna Lyons, Lena Dunham What: Suits by J.Crew.
Photo: Kevin Mazur/2016 Kevin Mazur
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Kristen Stewart What: Dress by Chanel, jewels by Repossi. Photo: Larry Busacca/2016 Getty Images
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Amandla Stenberg What: Evening jacket, bandeau, and trousers by Calvin Klein Collection.
Photo: Larry Busacca/2016 Getty Images
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Sarah Jessica Parker What: Outfit by MONSE; jewels by Fred Leighton.
Photo: Larry Busacca/2016 Getty Images
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Nicole Kidman What: Dress by Alexander McQueen, jewels by Fred Leighton.
Photo: Larry Busacca/2016 Getty Images
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Chloë Sevigny What: Dress by Simone Rocha. Photo: Dimitrios Kambouris/2016 Getty Images
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Katy Perry What: Dress by Prada.
Photo: Larry Busacca/2016 Getty Images
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Grimes What: Dress by Louis Vuitton. Photo: Larry Busacca/2016 Getty Images
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Emma Roberts What: Dress by Tory Burch, Edie Parker clutch, Giuseppe Zanotti shoes, and Norman Silverman diamonds.
Photo: Dimitrios Kambouris/20... more
Emma Roberts What: Dress by Tory Burch, Edie Parker clutch, Giuseppe Zanotti shoes, and Norman Silverman diamonds.
Photo: Dimitrios Kambouris/2016 Getty Images
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Emma Watson What: Dress by Calvin Klein Collection. Photo: Dimitrios Kambouris/2016 Getty Images
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The Weeknd, Bella Hadid What: Both wearing Givenchy.
Photo: Larry Busacca/2016 Getty Images
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Demi Lovato What: Dress by Moschino, purse by Edie Parker. Photo: Larry Busacca/2016 Getty Images
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Julie Macklowe What: Jumpsuit by Philipp Plein.
Photo: Larry Busacca/2016 Getty Images
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Lily-Rose Melody Depp What: Dress by Chanel. Photo: Larry Busacca/2016 Getty Images
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Kerry Washington What: Dress by Marc Jacobs, jewels by Fred Leighton. Photo: Larry Busacca/2016 Getty Images
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Uma Thurman What: Dress by Tommy Hilfiger; clutch and shoes by Jimmy Choo; jewels by Cartier. Photo: Dimitrios Kambouris/2016 Getty Images
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Claire Danes What: Dress by Zac Posen. Photo: Jamie McCarthy/2016 FilmMagic
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Allison Williams What: Dress by Peter Pilotto, purse bespoke Le Ligne x Edie Parker. Photo: Larry Busacca/2016 Getty Images
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Zoe Kravitz What: Dress by Valentino. Photo: Jamie McCarthy/2016 FilmMagic
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Kanye West What: Outfit by Balmain. Photo: John Shearer/2016 John Shearer
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Zendaya What: Dress by Michael Kors Collection. Photo: Jamie McCarthy/2016 FilmMagic
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Rachel McAdams What: Dress by Valentino. Photo: Jamie McCarthy/2016 FilmMagic
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Emily Blunt What: Dress by Michael Kors, jewels by Forevermark. Photo: Larry Busacca/2016 Getty Images
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Cindy Crawford What: Dress by Balmain. Photo: Kevin Mazur/2016 Kevin Mazur
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Lily Collins What: Dress by Valentino. Photo: John Shearer/2016 John Shearer
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Emma Stone What: Dress by Prada, jewels by Paige Novick and Walters Faith. Photo: Jamie McCarthy/2016 FilmMagic
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Amy Schumer What: Dress by Alexander Wang. Photo: Dimitrios Kambouris/2016 Getty Images
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Ashley Olsen, Mary-Kate Olsen Photo: Dimitrios Kambouris/2016 Getty Images
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Selena Gomez What: Dress by Louis Vuitton. Photo: Dimitrios Kambouris/2016 Getty Images
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Bobby Cannavale, Rose Byrne What: Rose Byrne is wearing a dress and shoes by Ralph Lauren Collection, a clutch by Jimmy Choo, and jewels by Carti... more
Bobby Cannavale, Rose Byrne What: Rose Byrne is wearing a dress and shoes by Ralph Lauren Collection, a clutch by Jimmy Choo, and jewels by Cartier.
Photo: Kevin Mazur/2016 Kevin Mazur
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Saoirse Ronan What: Dress by Christoper Kane. Photo: Dimitrios Kambouris/2016 Getty Images
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Naomi Campbell What: Dress by Cavalli Couture. Photo: Dimitrios Kambouris/2016 Getty Images
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Kate Hudson What: Dress by Atelier Versace.
Photo: Dimitrios Kambouris/2016 Getty Images
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Olivia Wilde What: Dress by Michael Kors, jewels by Jennifer Fisher. Photo: Jamie McCarthy/2016 FilmMagic
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Halsey What: Suit by DKNY. Photo: Taylor Hill/2016 Taylor Hill
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Haim What: Dresses by Rodarte.
Photo: Dimitrios Kambouris/2016 Getty Images
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Lily Aldridge What: Dress by Michael Kors Collection. Photo: Larry Busacca/2016 Getty Images
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Ciara What: Dress by H&M. Photo: Larry Busacca/2016 Getty Images
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Blake Lively What: Dress by Burberry. Photo: Larry Busacca/2016 Getty Images
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Katie Holmes What: Dress by Zac Posen. Photo: Dimitrios Kambouris/2016 Getty Images
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Jennifer Connelly What: Dress by Louis Vuitton. Photo: Larry Busacca/2016 Getty Images
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Cindy Crawford What: Dress by Balmain. Photo: Kevin Mazur/2016 Kevin Mazur
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Lara Stone What: Dress by Tom Ford. Photo: Larry Busacca/2016 Getty Images
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Hailee Steinfeld What: Dress by H&M, jewels by David Webb, clutch by Rauwolf. Photo: Dimitrios Kambouris/2016 Getty Images
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Léa Seydoux What: Louis Vuitton gown; Chopard jewelry.
Photo: Jamie McCarthy/2016 FilmMagic
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will.i.am What: Suit by Gucci. Photo: Larry Busacca/2016 Getty Images
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Emily Ratajkowski What: Dress by Prabal Gurung. Photo: Larry Busacca/2016 Getty Images
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Riley Keough What: Dress by Diane Von Furstenberg. Photo: Dimitrios Kambouris/2016 Getty Images
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Joan Smalls What: Dress by Balmain. Photo: Jamie McCarthy/2016 FilmMagic
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Liberty Ross What: Dress by Galliano; jewels by David Webb; headpiece by Stephen Jones Millinery. Photo: Kevin Mazur/2016 Kevin Mazur
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Anna Kendrick What: Dress by Derek Lam; shoes by Brian Atwood; jewels by Effy. Photo: Dimitrios Kambouris/2016 Getty Images
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Lauren Bush Photo: Kevin Mazur/2016 Kevin Mazur
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Adriana Lima What: Giambattista Valli Haute Couture dress, Oscar de la Renta shoes, jewels by Chopard, clutch by Roger Vivier.
Photo: Jamie McCa... more
Adriana Lima What: Giambattista Valli Haute Couture dress, Oscar de la Renta shoes, jewels by Chopard, clutch by Roger Vivier.
Photo: Jamie McCarthy/2016 FilmMagic
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LaLa Anthony, Carmelo Anthony What: LaLa is wearing a dress by Nicolas Jebran.
Photo: John Shearer/2016 John Shearer
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Kylie Jenner What: Dress by Versace. Photo: Dimitrios Kambouris/2016 Getty Images
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Alessandra Ambrosio What: Jewels by Fred Leighton.
Photo: Larry Busacca/2016 Getty Images
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Amber Valletta What: Dress by H&M. Photo: Larry Busacca/2016 Getty Images
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Karlie Kloss What: Dress by Brandon Maxwell, clutch Lisa Perry Scintillator XO Barneys, jewels by Repossi. Photo: Larry Busacc... more
Karlie Kloss What: Dress by Brandon Maxwell, clutch Lisa Perry Scintillator XO Barneys, jewels by Repossi. Photo: Larry Busacca/2016 Getty Images
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Karlie Kloss What: Dress by Brandon Maxwell, clutch Lisa Perry Scintillator XO Barneys, jewels by Repossi. Photo: Dimitrios Kambouris/2016 Getty... more
Karlie Kloss What: Dress by Brandon Maxwell, clutch Lisa Perry Scintillator XO Barneys, jewels by Repossi. Photo: Dimitrios Kambouris/2016 Getty Images
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Rosie Huntington-Whiteley What: Dress custom Ralph Lauren Collection.
Photo: Larry Busacca/2016 Getty Images
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Hannah Davis, Derek Jeter What: Hannah is wearing a dress by Zuhair Murad with Stuart Weitzman shoes. Photo: Larry Busacca/2016 Getty Images
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Elle Fanning What: Dress by Thakoon Ivory, shoes by Guiseppe Zanotti, jewels by Tiffany & Co., bag by Judith Leiber.
Photo: Dimitrios Kambou... more
Elle Fanning What: Dress by Thakoon Ivory, shoes by Guiseppe Zanotti, jewels by Tiffany & Co., bag by Judith Leiber.
Photo: Dimitrios Kambouris/2016 Getty Images
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Jennifer Hudson What: Dress by H&M.
Photo: Larry Busacca/2016 Getty Images
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Amber Heard What: Dress by Ralph Lauren Collection, shoes by Jimmy Choo, jewels by Anita Ko.
Photo: Larry Busacca/2016 Getty Images
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Michael B Jordan What: Suit by Calvin Klein. Photo: Andrew Toth/2016 Getty Images
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Karolina Kurkova What: Dress by Marchesa. Photo: Dimitrios Kambouris/2016 Getty Images
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Jourdan Dunn What: Dress by Balmain. Photo: Larry Busacca/2016 Getty Images
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Alexa Chung What: Tuxedo by Thakoon, jewles by Anita Ko earrings.
Photo: Dimitrios Kambouris/2016 Getty Images
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Orlanda Bloom What: Suit by Prada. Photo: Jamie McCarthy/2016 FilmMagic
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Mackenzie Davis What: Dress by Altuzarra.
Photo: Jamie McCarthy/2016 FilmMagic
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Dylan Penn What: Dress by Diane Von Furstenberg.
Photo: Matt Baron/BEI/Shutterstock/Copyright (c) 2016 BEimages. No use without permission.
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Naomi Watts What: Dress by Burberry, clutch by Rauwolf. Photo: Dimitrios Kambouris/2016 Getty Images
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Miranda Kerr What: Dress by Louis Vuitton. Photo: Larry Busacca/2016 Getty Images
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Tyga What: Suit by Balmain. Photo: Jamie McCarthy/2016 FilmMagic
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Dakota Fanning What: Dress by Nina Ricci, bag and shoes by Nina Ricci shoes, jewels by Fred Leighton.
Photo: Kevin Mazur/2016 Kevin Mazur
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Ellie Bamber What: Dress by Giles Deacon, shoes by Christian Louboutin, clutch by Jimmy Choo, jewels by Anna Hu.
Photo: Larry Busacca/2016 Getty... more
Ellie Bamber What: Dress by Giles Deacon, shoes by Christian Louboutin, clutch by Jimmy Choo, jewels by Anna Hu.
Photo: Larry Busacca/2016 Getty Images
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Jessica Hart What: Dress by Azzedine Alaia, jewels by Bavna and Mattia Cielo.
Photo: Larry Busacca/2016 Getty Images
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Chloë Grace Moretz What: Dress by Coach. Photo: Dimitrios Kambouris/2016 Getty Images
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Kate Upton What: Dress by Topshop, jewels by Jennifer Fisher. Photo: Larry Busacca/2016 Getty Images
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Maria Sharapova What: Dress and jewels by Juan Carlos Obando, shoes by Gianvito Rossi.
Photo: Dimitrios Kambouris/2016 Getty Images
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Diplo What: Tuxedo by Calvin Klein. Photo: Larry Busacca/2016 Getty Images
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Mindy Kaling What: Dress by Tory Burch. Photo: Dimitrios Kambouris/2016 Getty Images
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Jemima Kirke What: Dress by Chanel. Photo: Jamie McCarthy/2016 FilmMagic
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Kate Mara What: Dress by Paco Rabanne. Photo: Larry Busacca/2016 Getty Images
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Lauren Santo Domingo What: Dress by Giambattista Valli Haute Couture.
Photo: Larry Busacca/2016 Getty Images
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Hailey Baldwin Photo: Dimitrios Kambouris/2016 Getty Images
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Tabitha Simmons Photo: Andrew Toth/2016 Getty Images
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Gugu Mbatha-Raw What: Dress by Gabriela Hearst. Photo: Larry Busacca/Getty Images
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Michelle Williams What: Dress by Louis Vuitton. Photo: Dimitrios Kambouris/2016 Getty Images
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Nick Jonas What: Tuxedo by Topman. Photo: Dimitrios Kambouris/2016 Getty Images
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Aja Naomi King What: Dress by Prabal Gurung, jewels by Le Vian, clutch by Rauwolf. Photo: Larry Busacca/2016 Getty Images
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Humberto Leon, Agnyess Deyn, Carol Lim What: Agnyess Deyn wears dress by Kenzo. Photo: Julian Mackler/BFA
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Georgina Chapman What: Dress by Marchesa. Photo: Karwai Tang/2016 Karwai Tang
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Herizen F. Guardiola What: Dress by Monique Lhuillier. Photo: Dimitrios Kambouris/2016 Getty Images
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Huma Abedin What: Dress by Altuzarra. Photo: Kevin Mazur/2016 Kevin Mazur
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Sienna Miller What: Dress by Gucci, jewels by Cartier.
Photo: Kevin Mazur/2016 Kevin Mazur
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Anna Ewers What: Dress by BOSS.
Photo: Dimitrios Kambouris/2016 Getty Images
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Fei Fei Sun What: Dress by Chanel.
Photo: Larry Busacca/2016 Getty Images
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Juno Temple What: Dress by Erdem. Photo: Larry Busacca/2016 Getty Images
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Liu Wen Photo: Larry Busacca/2016 Getty Images
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Margot Robbie What: Dress by Calvin Klein Collection, jewels by Tiffany & Co.
Photo: Larry Busacca/2016 Getty Images
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Zoey Deutch Photo: Larry Busacca/2016 Getty Images
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Tavi Gevinson What: Dress by Coach. Photo: Larry Busacca/2016 Getty Images
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Wiz Khalifa What: Custom Rag & Bone tuxedo.
Photo: Larry Busacca/2016 Getty Images
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Irina Shayk What: Dress by Givenchy. Photo: Jamie McCarthy/2016 FilmMagic
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Marc Jacobs, Bette Midler What: Bette is wearing a beaded headress by Suzanne Bartsch.
Photo: Kevin Mazur/2016 Kevin Mazur
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Brie Larson What: Dress by Proenza Schouler. Photo: Larry Busacca/2016 Getty Images
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Jessica Chastain What: Dress by Prada, jewels by Piaget.
Photo: Larry Busacca/2016 Getty Images
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Photo: Dimitrios Kambouris/2016 Getty Images
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Wendi Deng What: Jewels by Cindy Chao, dress by Christopher Kane. Photo: Larry Busacca/2016 Getty Images
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Freida Pinto What: Dress by Tory Burch. Photo: Larry Busacca/2016 Getty Images
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Kris Jenner What: Dress by Balmain. Photo: Larry Busacca/2016 Getty Images
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Bee Shaffer What: Dress by Alexander McQueen. Photo: Dimitrios Kambouris/2016 Getty Images
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Anna Wintour What: Dress by Chanel.
Photo: Dimitrios Kambouris/2016 Getty Images
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Poppy Delevingne What: Dress by Marchesa. Photo: Larry Busacca/2016 Getty Images
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Lilliana Vazquez Photo: Dimitrios Kambouris/2016 Getty Images
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Rachel Smith What: Dress by Sophie Theallet. Photo: Dimitrios Kambouris/2016 Getty Images
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Elizabeth Cordry Photo: Dimitrios Kambouris/2016 Getty Images
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Catt Sadler Photo: Dimitrios Kambouris/2016 Getty Images
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Idris Elba What: Tuxedo by Tom Ford. Photo: Larry Busacca/2016 Getty Images
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Aziz Ansari What: Suit by Tommy Hilfiger, jewels by David Yurman.
Photo: Jamie McCarthy/2016 FilmMagic
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Nas What: Tuxedo by Public School. Photo: Larry Busacca/2016 Getty Images
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Colin Farrell What: Suit by Dolce & Gabbana.
Photo: Larry Busacca/2016 Getty Images
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Diane von Furstenberg Photo: Dimitrios Kambouris/2016 Getty Images
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Louise Parker What: Dress by Chanel. Photo: Dimitrios Kambouris/2016 Getty Images
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Tory Burch What: Jewels by Fred Leighton.
Photo: Larry Busacca/2016 Getty Images
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Ivanka Trump What: Dress by Ralph Lauren Collection. Photo: Larry Busacca/2016 Getty Images
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Suzy Menkes Photo: Larry Busacca/2016 Getty Images