Sneak Peek! Gossip Girl: Monstrous Ball
Will Blair (Leighton Meester) help out Sage (guest star Sofia Black-D'elia) take down Serena (Blake Lively)? But more importantly, is Serena really getting engaged? Watch Dan (Penn Badgley) revel in the chaos of it all.
Catch a new episode of Gossip Girl this Thursday at 8pm on ETC.