Tinsley Mortimer to Guest Star on Gossip Girl

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A well-known Manhattan socialite, Tinsley Mortimer, apparently has agreed to make a cameo appearance on Gossip Girl this fall.

Tinsley Mortimer, along with regulars Blake Lively and Taylor Momsen, were spotted in white dresses on Monday morning, walking to the set of Gossip Girl on Long Island's Hamptons region!

Tinsley Mortimer

Tinsley Mortimer on the set of Gossip Girl today.

Last season, another prominent New York socialite, the publishing heiress Lydia Hearst, made a cameo on the season finale.

Click to enlarge these pictures of Blake Lively and Taylor Momsen, who were also seen arriving to work in white this morning!

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.

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