The singer struts at the Shark Tale premiere. Plus: Mary-Kate and Ashley, Matthew Perry and more

SERVED UP

Matthew Perry uses his backhand for a good cause: The Friends star, who was a competitive tennis player as a teen, joined in the Racquet Rumble 2004 Celebrity Tennis Tournament in Pacific Palisades, Calif., on Sunday, raising money for the T.J. Martell Foundation, an organization dedicated to leukemia, cancer and AIDS research.