Leighton Meester and Michelle Trachtenberg.

Jessica Szhor having a good time at the event.

Yummy bite sized cupcakes were served at the event.

Leighton Meester Performed at AMERICAN EAGLE OUTFITTERS Flagship Store Preview Party. VIPs walked an interactive, subway-themed red carpet and be the first to explore the brandÍs four stories of unique offerings. Ashlee and Pete are seen here on their way in.

Leighton Meester is seen here in one of the outfits she wore at the grand opening.

See what else Leighton wore at the event last night here.

Jessica Szhor with Adrian Grenier at American Eagle Outfitters.

Leighton Meester singing at the American Eagle Outfitters event in New York.