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Jennifer Lawrence What: Dress by Dior couture; jewels by Chopard Photo: Jason Merritt/2016 Getty Images
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Laverne Cox What: Dress by Elizabeth Kennedy; clutch by Nathalie Trad Photo: Kevork Djansezian/NBC
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Kirsten Dunst What: Dress by Valentino Photo: Jason Merritt/2016 Getty Images
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Taraji P. Henson What: Dress by Stella McCartney Photo: Kevork Djansezian/NBC/2016 Kevork Djansezian/NBC
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Viola Davis What: Dress by Marchesa; jewels by Jacob & Co. Photo: Jason Merritt/2016 Getty Images
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Kate Hudson What: Dress by Michael Kors Collection; jewels by Forevermark Photo: Jason Merritt/2016 Getty Images
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Lady Gaga, Taylor Kinney Lady Gaga wears dress by Atelier Versace
Photo: Trae Patton/NBC/2016 Trae Patton/NBC
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Zendaya What: Dress and clutch by Marchesa Photo: John Shearer/2016 John Shearer
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Taylor Schilling What: Suit by Thakoon; jewels by Monique Pean Photo: John Shearer/2016 John Shearer
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Olivia Wilde What: Dress by Michael Kors collection Photo: Jason Merritt/2016 Getty Images
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Alicia Vikander What: Dress by Louis Vuitton Photo: Steve Granitz/2016 Steve Granitz
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Jane Fonda What: Dress by Yves Saint Laurent couture; jewels by Chopard Photo: Jason Merritt/2016 Getty Images
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Regina King What: Dress by Krikor Jabotian; shoes by Rene Caovilla; earrings by Coomi; ring by Alan Friedman
Photo: Jason Merritt/2016 Getty Images
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Julianne Moore What: Dress by Tom Ford Photo: Jason Merritt/2016 Getty Images
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Amy Schumer What: Dress by Prabal Gurung
Photo: John Shearer/2016 John Shearer
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Cate Blanchett What: Dress by Givenchy; jewels by Tiffany & Co. Photo: Kevork Djansezian/NBC/2016 Kevork Djansezian/NBC
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Rooney Mara What: Dress by Alexander McQueen; shoes by Jimmy Choo Photo: Alberto Rodriguez/NBC/2016 Alberto Rodriguez/NBC
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Casper Smart, Jennifer Lopez Jennifer wears dress by Giambattista Valli couture; jewels by Harry Winston; shoes by Jimmy Choo; bag by Judith Leib... more
Casper Smart, Jennifer Lopez Jennifer wears dress by Giambattista Valli couture; jewels by Harry Winston; shoes by Jimmy Choo; bag by Judith Leiber
Photo: Jason Merritt/2016 Getty Images
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Jill Soloway, Gaby Hoffmann Gaby wears dress by Zero + Maria Cornejo Photo: Steve Granitz/2016 Steve Granitz
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Katy Perry What: Dress by Prada
Photo: Jason Merritt/2016 Getty Images
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Maggie Gyllenhaal What: Dress by Marc Jacobs
Photo: Kevork Djansezian/NBC/2016 Kevork Djansezian/NBC
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Amy Adams What: Dress by Atelier Versace Photo: Jason Merritt/2016 Getty Images
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Kate Winslet What: Dress by Ralph Lauren Photo: Kevork Djansezian/NBC/2016 Kevork Djansezian/NBC
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Rachel McAdams What: Dress by Salvatore Ferragamo; jewels by Forevermark
Photo: Jason Merritt/2016 Getty Images
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Leonardo DiCaprio What: Suit by Giorgio Armani Photo: Jason Merritt/2016 Getty Images
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Emmy Rossum What: Dress by Armani Privé Photo: Jason Merritt/2016 Getty Images
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Heidi Klum What: Dress by Marchesa
Photo: Steve Granitz/2016 Steve Granitz
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Oscar Isaac What: Suit by rag & bone Photo: John Shearer/2016 John Shearer
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America Ferrera Where: Dress by Jenny Packham; jewels by Simon G. Photo: Jason Merritt/2016 Getty Images
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Michael B. Jordan What: Suit by Dior Homme; jewels by Piaget
Photo: Alberto Rodriguez/NBC/2016 Alberto Rodriguez/NBC
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Saoirse Ronan What: Dress by Yves Saint Laurent couture; jewels by Chopard Photo: Jason Merritt/2016 Getty Images
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Dwayne Johnson, Simone Alexandra Johnson The Rock wears suit by Robert Mata
Photo: Kevork Djansezian/NBC/2016 Kevork Djansezian/NBC
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Kate Bosworth What: Dress by Dolce & Gabbanna Photo: Jason Merritt/2016 Getty Images
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Melissa McCarthy What: Dress by Melissa McCarthy Photo: Jason Merritt/2016 Getty Images
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Uzo Aduba What: Dress by Talbot Ruhof Photo: Steve Granitz/2016 Steve Granitz
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Gina Rodriguez What: Dress by Zac Posen Photo: Jason Merritt/2016 Getty Images
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Amanda Peet What: Dress by Alexander McQueen; jewelry by Cartier; shoes by Saint Laurent
Photo: VALERIE MACON
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Sophia Bush What: Dress by Narciso Rodriguez Photo: VALERIE MACON
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Emilia Clarke What: Dress by Valentino Photo: Jason Merritt/2016 Getty Images
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Jane Wu What: Dress by Theia; jewels by Bavna
Photo: Kevork Djansezian/NBC/2016 Kevork Djansezian/NBC
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Christian Bale, Sibi Bale What: Christian wears suit by Dolce & Gabbana
Photo: Jason Merritt/2016 Getty Images
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Caitriona Balfe What: Dress by Alexander McQueen Photo: Kevork Djansezian/NBC/2016 Kevork Djansezian/NBC
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Denis O'Hare What: Platform sandals by Christian Louboutin
Photo: Kevork Djansezian/NBC/2016 Kevork Djansezian/NBC
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Will Smith, Jada Pinkett Smith Jada wears dress by Versace; jewels by Van Cleef; shoes by Jimmy Choo. Will wears suit by Tom Ford
Photo: Alberto... more
Will Smith, Jada Pinkett Smith Jada wears dress by Versace; jewels by Van Cleef; shoes by Jimmy Choo. Will wears suit by Tom Ford
Photo: Alberto Rodriguez/NBC/2016 Alberto Rodriguez/NBC
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Amber Heard What: Dress by Gucci Photo: John Shearer/2016 John Shearer
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Helen Mirren What: Dress by Badgley Mischka Photo: Steve Granitz/2016 Steve Granitz
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Olivia Palermo What: Dress by Delpozo Photo: VALERIE MACON
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Brie Larson What: Dress by Calvin Klein collection; shoes by Salvatore Ferragamo; jewels by Tiffany & Co.
Photo: Jason Merritt/2016 Getty Im... more
Brie Larson What: Dress by Calvin Klein collection; shoes by Salvatore Ferragamo; jewels by Tiffany & Co.
Photo: Jason Merritt/2016 Getty Images
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Queen Latifah What: Dress by Badgley Mischka
Photo: Jason Merritt/2016 Getty Images
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Maril Davis Photo: Kevork Djansezian/NBC/2016 Kevork Djansezian/NBC
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Eric White, Patricia Arquette Patricia wears dress by Paule Ka; shoes by Kurt Geiger; bag by Lee Savage; jewels by Bvlgari
Photo: Kevork Djansez... more
Eric White, Patricia Arquette Patricia wears dress by Paule Ka; shoes by Kurt Geiger; bag by Lee Savage; jewels by Bvlgari
Photo: Kevork Djansezian/NBC/2016 Kevork Djansezian/NBC
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Bryan Cranston, Robin Dearden Photo: Alberto Rodriguez/NBC/2016 Alberto Rodriguez/NBC
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Corinne Foxx, Jamie Foxx Photo: Kevork Djansezian/NBC/2016 Kevork Djansezian/NBC
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Portia Doubleday What: Dress by Naeem Khan; jewels by Simon G. Photo: Alberto Rodriguez/NBC/2016 Alberto Rodriguez/NBC
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Channing Tatum, Jenna Dewan Channing wears suit by Dior Homme, timepiece by Montblac; Jenna wears dress by Zuhair Murad
Photo: Jason Merritt/201... more
Channing Tatum, Jenna Dewan Channing wears suit by Dior Homme, timepiece by Montblac; Jenna wears dress by Zuhair Murad
Photo: Jason Merritt/2016 Getty Images
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Max Greenfield Photo: Alberto Rodriguez/NBC/2016 Alberto Rodriguez/NBC
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Jamie Lee Curtis What: Jewels by Cathy Waterman Photo: Kevork Djansezian/NBC/2016 Kevork Djansezian/NBC
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J. K. Simmons, Michelle Schumacher Photo: John Shearer/2016 John Shearer
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Angela Bassett What: Dress by SAFiYAA; clutch by Swarovski Photo: Jason Merritt/2016 Getty Images
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Eddie Redmayne What: Suit by Gucci Photo: Jason Merritt/2016 Getty Images
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Felicity Huffman What: Dress by Lorena Sarbu Photo: VALERIE MACON
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Natalie Dormer What: Dress by J. Mendel Photo: VALERIE MACON
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Wiz Khalifa What: Suit by Thom Browne Photo: John Shearer/2016 John Shearer
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Sam Heughan What: Tuxedo by Dunhill Photo: Jason Merritt/2016 Getty Images
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Orlando Bloom Photo: Jason Merritt/2016 Getty Images
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Rosie Huntington-Whiteley, Jason Statham Rosie wears dress by Atelier Versace; clutch by Jimmy Choo Photo: Jason Merritt/2016 Getty Images
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Leslie Mann, Judd Apatow Photo: Jason Merritt/2016 Getty Images
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Michael Fassbender What: Jewels by Chopard Photo: Jason Merritt/2016 Getty Images
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Lily Tomlin What: Clutch by Swarvoski Photo: Jason Merritt/2016 Getty Images
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Jessica Oyelowo, David Oyelowo Jessica wears dress by Marchesa; David wears suit by Dolce & Gabbanna, timepiece by Montblac Photo: Jason Mer... more
Jessica Oyelowo, David Oyelowo Jessica wears dress by Marchesa; David wears suit by Dolce & Gabbanna, timepiece by Montblac Photo: Jason Merritt/2016 Getty Images
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Zoe Kazan, Paul Dano Paul wears suit by Prada, jewels by Piaget,timepiece by Montblac; Zoe wears dress by Miu Miu
Photo: Jason Merritt/2016 Gett... more
Zoe Kazan, Paul Dano Paul wears suit by Prada, jewels by Piaget,timepiece by Montblac; Zoe wears dress by Miu Miu
Photo: Jason Merritt/2016 Getty Images
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Malin Akerman What: Dress by Reem Acra Photo: VALERIE MACON
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Carly Chaikin Photo: Kevork Djansezian/NBC/2016 Kevork Djansezian/NBC
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Brad Hall, Julia Louis-Dreyfus Photo: Alberto Rodriguez/NBC/2016 Alberto Rodriguez/NBC
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Patrick Wilson, Dagmara Dominczyk Photo: VALERIE MACON
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Eva Green Photo: Jason Merritt/2016 Getty Images
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Rachel Bloom What: Dress by Christian Siriano Photo: Jason Merritt/2016 Getty Images
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Amy Landecker Photo: John Shearer/2016 John Shearer
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Aziz Ansari Photo: Kevork Djansezian/NBC/2016 Kevork Djansezian/NBC
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Michaela Watkins Photo: VALERIE MACON
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Sarah Hay What: Dress by Marchesa Photo: Jason Merritt/2016 Getty Images
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Matt Damon, Luciana Barroso Matt wears suit by Versace; jewels by Piaget; shoes by Bruno Magli Photo: VALERIE MACON
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Bryshere Y. Gray Photo: John Shearer/2016 John Shearer
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Melissa Benoist What: Dress by Monique Lhuillier; shoes by Stuart Weitzman; clutch by Judith Leiber; jewels by Irene Neuwirth Photo: Kevork Djan... more
Melissa Benoist What: Dress by Monique Lhuillier; shoes by Stuart Weitzman; clutch by Judith Leiber; jewels by Irene Neuwirth Photo: Kevork Djansezian/NBC/2016 Kevork Djansezian/NBC
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Tara Lynne Barr Photo: Jason Merritt/2016 Getty Images
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Bryce Dallas Howard What: Dress by Jenny Packham Photo: Jason Merritt/2016 Getty Images
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Maura Tierney What: Dress by Elizabeth Kennedy Photo: Jason Merritt/2016 Getty Images
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Jaimie Alexander What: Dress by Genny Photo: Jason Merritt/2016 Getty Images
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Harrison Ford, Calista Flockhart Photo: John Shearer/2016 John Shearer
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Ricky Gervais, Jane Fallon Photo: Kevork Djansezian/NBC/2016 Kevork Djansezian/NBC
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Joanne Froggatt What: Dress by Reem Acra; jewels by Chopard Photo: Jason Merritt/2016 Getty Images
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Judith Light Photo: Jason Merritt/2016 Getty Images
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Ken Jeong, Tran Jeong Photo: VALERIE MACON
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Patrick Stewart, Sunny Ozell Photo: Kevork Djansezian/NBC/2016 Kevork Djansezian/NBC
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Michael Shannon Photo: John Shearer/2016 John Shearer
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Martin Wallstrom Photo: Jason Merritt/2016 Getty Images
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Charles Randolph, Mili Avital Photo: Kevork Djansezian/NBC/2016 Kevork Djansezian/NBC
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Jennifer Jason Photo: Kevork Djansezian/NBC/2016 Kevork Djansezian/NBC
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Rob Lowe, Sheryl Berkoff What: Rob wears Chopard cufflinks Photo: Alberto Rodriguez/NBC/2016 Alberto Rodriguez/NBC
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John Krasinski What: timepiece by Montblac
Photo: Steve Granitz/2016 Steve Granitz
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Sunrise Coigney, Mark Ruffalo Mark wears timepiece by Montblac Photo: Alberto Rodriguez/NBC/2016 Alberto Rodriguez/NBC
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Steve Carell, Nancy Carell Photo: Alberto Rodriguez/NBC/2016 Alberto Rodriguez/NBC