Check back all through the night for a list of who's wearing what!

Kate Winslet - Yves Saint Laurent
Anne Hathaway - Armani Prive
Freida Pinto - John Galliano
Angelina Jolie - Elie Saab
Penelope Cruz - Vintage Balmain
Marion Cotillard - Dior Haute Couture
Amy Adams - Carolina Herrera
Marisa Tomei - Versace
Natalie Portman - Rodarte
Jessica Biel - Prada / Oscar de la Renta
Meryl Streep - Alberta Ferretti
Beyonce Knowles - House of Dereon
Sarah Jessica Parker - Dior Haute Couture
Amanda Seyfried - Valentino Couture
Taraji P. Hensen - Roberto Cavalli
Virginia Madsen - Kevan Hall
Reese Witherspoon - Rodarte
Viola Davies - Reem Acra
Halle Berry - Marchesa
Leslie Mann - Pamela Rolland
Queen Latifah - Georges Chakra
Heidi Klum - RM Roland Mouret
Miley Cyrus - Zuhair Murad
Tina Fey - Zac Posen
Vanessa Hudgens - Marchesa
Maria Menounos - Randi Rahm
Sophia Loren - Armani Prive
Tilda Swinton - Lanvin
Kate Beckinsale - J. Mendel
Sharon Stone - Christian Dior
Victoria Beckham - Victoria Beckham
Dominic Cooper - Burberry
Dev Patel - Burberry
Hugh Jackman - Burberry x 3 (!!!!!)