Tinsley Mortimer Joins Gossip Girl

Manhattan socialite Tinsley Mortimer (in Thread Social) apparently has scored herself a cameo on the hit CW drama, Gossip Girl.

The Tinz, along with regulars Blake Lively and Taylor Momsen, were spotted in white dresses on Monday morning walking to the set of Gossip Girl, which is currently filming in the Hamptons on Long Island, New York.

Last season, publishing heiress Lydia Hearst made a cameo on the season finale of Gossip Girl.

It should also be reported that MTV recently shot down a reality show featuring Ms. Mortimer. A source told Page Six, “A Tinsley reality show was shot by MTV. But they couldn’t use any of it. It’s collecting dust. She looked good but she just got dressed and went to parties every day and didn’t have anything interesting to say. It was incredibly boring. The project is dead.”

10+ pictures inside of Gossip Girl guest star Tinsley Mortimer…