Stars studded at the Metropolitan Museum of Art Costume Institute Benefit

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]

Rihanna poses on arrival 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]