Stars studded at the Metropolitan Museum of Art Costume Institute Benefit

Singer Fergie poses on arrival at the Metropolitan Museum of Art Costume Institute Benefit celebrating the opening of the exhibition "Alexander McQueen: Savage Beauty" in New York May 2, 2011.[Photo/Agencies]

Singer Rihanna poses on the red carpet at the Metropolitan Museum of Art Costume Institute Benefit celebrating the opening of Alexander McQueen: Savage Beauty, in New York, May 2, 2011.[Photo/Agencies]