Leighton Meester Does Times Square.

Leighton Meester channels her inner Lady Gaga at a special live 5-songs performance at American Eagle Outfitters flagship store in NYC's Times Square. Her celebrity devotees in the crowd included the boyf/co-star Sebastian Stan, Jessica Szohr, Michelle Trachtenberg and Matthew Settle, as well as Ashlee Simpson, Adrian Grenier and Christian Siriano.