The hautest celebrities worked the red carpet at last night’s Metropolitan Museum of Art Costume Institute Gala 2010, also known as the “East Coast Oscars.” Check out all the fierce fashion and A-list fabulousness. The theme for this year’s exhibition is “American Women: Fashioning a National Identity.” Oprah Winfrey shared hosting duties with Vogue’s Editor-in-Chief Anna Wintour, and GAP designer Patrick Robinson.