Most known for playing Queen "B" Blair Waldorf on "Gossip Girl," Leighton Meester is all grown up ... including "Law & Order," "Veronica Mars," "Entourage," and "House." Her 2006 "House ...

Those who spared themselves “Gossip Girl” during its original incarnation (or, Lord knows, its second coming) may find themselves latecomers to the fan base of Leighton Meester, who played the ...