2010 Costume Institute Gala celebrating "American Woman: Fashioning a National Identity."

SAY NOOOOOOOOOOOOOOOOOOOOOOO to :

good:

Carey Mulligan, in Miu Miu, with Martin Katz jewels and Miu Miu shoes.

Phillip Lim, in his own design, with Alexa Chung, in 3.1 Phillip Lim, with 3.1 Phillip Lim clutch and shoes.

Karlie Kloss, in Donna Karan with Ivanka Trump jewels.

Lily Donaldson, in Marc Jacobs, with a Marc Jacobs clutch.