Ashley Greene, Orlando Bloom, John Legend, Diane Kruger, Jessica Alba, Nicole Richie and Kanye West turned out for Monday night's event, as well. Also on hand were Kate Hudson, Sarah Jessica Parker, Madonna and Rihanna.
The gala celebrated an exhibit called "Alexander McQueen: Savage Beauty," which opens Wednesday at Manhattan's Metropolitan Museum of Art and runs through July 31.
The British designer took a mix of cocaine, tranquilizers and sleeping pills before he hanged himself in February 2010. He committed suicide shortly after the death of his mother. He was 40.