all the looks from the costume institute gala 2012!

Liu Wen wearing Michael Kors

Isabeli Fontana wearing Pucci

Karen Elson and Alexa Chung wearing Marc Jacobs

Dree Hemmingway wearing Topshop

Stella Tennant wearing Chanel

Karlie Kloss wearing Jason Wu

Arizona Muse wearing Erdem

Cara Delevingne and Jourdan Dunn wearing Burberry

Chanel Iman wearing Tom Ford

Constance Jablonski wearing Haider Ackermann

Chloe Sevigny wearing Miu Miu

Joan Smalls wearing Balmain

Natalia Vodianova wearing Louis Vuitton

Rosie Huntington-Whiteley wearing Burberry

Anne Vyalitsyna wearing Prada

Carolyn Murphy wearing Alexander Wang

Shailene Woodley wearing Christopher Kane

Hailee Steinfeld wearing Prada

Caroline Trentini wearing Olivier Theyskens

Angela Lindvall wearing Prada

Camilla Belle wearing Ralph Lauren

Jessica Stam wearing Christian Dior

Anja Rubik wearing Vaccarello

Brooke Shields wearing J.Mendel

Scarlett Johansson wearing Dolce & Gabbana

Bee Shaffer wearing Erdem

Brooklyn Decker wearing Tory Burch

Gwyneth Paltrow wearing Prada

Amy Adams wearing Giambattista Valli

Ashley Greene wearing Donna Karan

Amber Heard wearing Zac Posen

Anna Wintour wearing Prada

Amber Valetta wearing Prada

Beyonce wearing Givenchy

Camilla Belle wearing Ralph Lauren

Cate Blanchett wearing Alexander McQueen

Claire Danes wearing J.Mendel

Cameron Diaz wearing Stella McCartney

Christina Ricci wearing Thakoon

Dianna Agron wearing Carolina Herrera

Dakota Fanning wearing Louis Vuitton

Diane Kruger wearing Prada

Eva Mendes wearing Prada

Emma Roberts wearing Escada

Florence Welch wearing Alexander McQueen

Gennifer Goodwin wearing Monique Lhuillier 

Heidi Klum wearing Escada

Hilary Swank wearing Michael Kors

Jessica Alba wearing Michael Kors

Gisele Bundchen wearing Givenchy

Jessica Biel wearing Prada

Jessica Chastain wearing Louis Vuitton

Julianne Hough wearing Carolina Herrera 

January Jones wearing Versace

Kate Bosworth wearing Prada

Kirsten Dunst wearing Rodarte

Karolina Kurkova wearing Rachel Zoe

Katherine McPhee wearing Elie Saab

Kristen Stewart wearing Balenciaga

Kristin Wigg wearing Stella McCartney

Linda Evangelista wearing Prada

Leighton Meester wearing Marchesa

Lea Michele wearing Diane Von Furstenberg

Carey Mulligan wearing Prada

Mary-Kate Olsen wearing The Row

Nina Dobrev wearing Donna Karan

Paula Patton wearing Vera Wang

Rihanna wearing Tom Ford

Rooney Mara wearing Givenchy

Rosario Dawson wearing Calvin Klein

Renee Zellweger wearing Pucci

Sarah Jessica Parker wearing Valentino

Sofia Vergara wearing Marchesa

Coco Rocha wearing Givenchy

Emily Blunt wearing Calvin Klein

Emma Stone wearing Lanvin

Candice Swanepoel wearing Rag & Bone

Victoria Justice wearing McQ by Alexander McQueen

Kate Upton wearing Michael Kors

Doutzen Kroes wearing Roland Mouret

Lana Del Rey wearing Joseph Altuzarra

Lily Collins wearing Valentino

Liv Tyler wearing Givenchy

Marion Cotillard wearing Christian Dior

Mia Wasikowska wearing Prada

Milla Jovovich wearing Prada

Poppy Delevingne wearing Chanel