Leighton Meester: Mother's Day with 'Gossip Girl' Mom!

Leighton Meester poses for a photo with her Gossip Girl on-screen mom Margaret Colin and a mystery man after spending time together on Mother's Day Sunday (May 12) in Hollywood. The 27-year-old actress was also joined for the afternoon by her gal pals Aly & AJ Michalka and Davida Williams. "Happy Mother's Day @amandajoy78 @alyrenae