Winehouse steps into the spotlight during the 46664 concert honoring Nelson Mandela in London. Plus: Rihanna & Adam Levine, Blake Lively, Mary-Kate Olsen and more

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LIFE'S A BEACH

While Lively struts her stuff on the beach, her Gossip Girl costar Ed Westwick – who recently rocked out with his band in N.Y.C. – gets into character (and a picnic) as bad boy Chuck on the set of their show.