Leighton Meester shows off her gorgeous gams at the Longchamp 60th Anniversary Celebration at the La Maison Unique Longchamp in New York City on Monday.

The 22-year-old actress wore a hip-hugging BCBG Max Azria mini, Cartier gems and black-and-white Dior heels.

Jessica Szhor, Nicole Fiscella, Lindsay Price and Susan Sarandon were some of the other celebs who stopped by the event.

10+ pictures of Leighton Meester’s mini-mania… More Here! »

Leighton Meester (in Jill by Jill Stuart) totes around the Rebecca Minkoff “Nikki” bag while out and about with costar Nicole Fiscella in Greenwich Village on Thursday.

The 22-year-old actress, who appeared in season one of Entourage as Justine Chapin, will reprise her role in season five, appearing in at least one episode in the first half of the season. Season five of Entourage is set to premiere in September.

Leighton is set to play a possible love interest for everyone’s favorite semi-successful actor Vince Chase (Adrian Grenier).

More pics inside of Leighton Meester as a Greenwich Gossip Girl…

More Here! »

Leighton Meester and Taylor Momsen film more scenes outside of the Metropolitan Museum of Art (MET) on the Upper East Side of Manhattan on Monday.

Leighton grabbed a bite to eat in between takes–a fruit cup! Momsem filmed more scenes with newcomer Jesse Swenson, her love interest on the show.

Since Nan Zhang (Kati Farkas) abruptly left the series to enroll at Brown University, a look-alike Kati has quickly filled her shoes. Who’s the new girl?!

T-minus two weeks for new episodes of Gossip Girl — April 21!!

10+ pictures inside of Meester & Momsen at the MET… More Here! »

Gossip Girl hottie Leighton Meester, aka Blair Waldorf, exudes elegance in a beautiful brown gown at the New York City Ballet opening night gala on Tuesday.

Accompanied Leighton, 22, to the ballet was 28-year-old Gossip Girl costar Nicole Fiscella (Isabel Coates) in a shimmery asymmetrical gown. Classy!

In the next episode of Gossip Girl, Blair’s emotions spiral out of control when she learns that her father isn’t coming home for Thanksgiving. GG episode (”Blair Waldorf Must Pie!”) airs on Wednesday, Nov. 28 @ 9PM ET/PT.

15+ pictures inside of Leighton Meester and Nicole Fiscella @ the NYC Ballet Opening Gala…

xoxo GOSSIP GUY More Here! »