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

Leighton Meester stops to pose for a photo on Mother’s Day Sunday (May 12) in Hollywood.

The 27-year-old actress was joined by her Gossip Girl co-star and on-screen mother Margaret Colin, as well as her gal pals Aly & AJ Michalka.

PHOTOS: Check out the latest pics of Leighton Meester

“Happy Mother’s Day @amandajoy78 @alyrenae @davidabwilliams #futuremomsclub,” she captioned a photo on Instagram.

A few months earlier, Leighton was spotted leaving a yoga class in Los Angeles.

10+ pics inside of Leighton Meester out celebrating Mother’s Day…