The theme, of course, was model as muse. The atmosphere, glamour to the max. Here, some of our favorite entrances from the Costume Institute gala.
Dashing Duos

Justin Timberlake and Jessica Biel

Kate Moss and Marc Jacobs

Marion Cotillard (in Dior) and Chopard and John Galliano

Diane Kruger (in Chanel) and Joshua Jackson

Gisele Bundchen (in Versace) and Tom Brady

Lou Doillon and Olivier Theyskens
Stella's Girls
Liv Tyler, Kate Hudson, Stella McCartney and Kate Bosworth all in Stella McCartney
Eccentrics (or eccentric choices)
Madonna

Sasha Pivovarova in Giambattista Valli

Leighton Meester

Coco Rocha and Isaac Mizrahi

Agyness Deyn and Twiggy

Amanda Brooks

Erin O'Connor (in Jean Paul Gaultier)
Click HERE for more photos from the evening. Photos: WWD Staff.