Rufus and Lily move up their wedding date; Chuck uncovers a secret that Carter was hiding from Serena; Georgina pulls Vanessa and Dan into one of her schemes; Blair grows suspicious of... Full summary

Jenny starts her reign as the new Queen Bee; Lily comes back home; a movie star named Olivia Burke (Hilary Duff) is assigned as Vanessa's roommate at NYU; Serena befriends Ursula (Tyra... Full summary

Blair and Chuck both set their sights on an item for bid at Sotheby's; Serena thinks Carter is up to his old habits; Georgina becomes interested in Dan; Vanessa grows suspicious of... Full summary

Georgina is determined to make Blair a social outcast; Serena tries to get even with Chuck; Bree and Nate decide to continue exploring their relationship.

Chuck and Blair adjust to life as a couple; Serena returns from Europe with secrets and a complicated relationship; Rufus, Jenny and Dan get used to the van der Woodsens' glamorous... Full summary

In the second-season finale, a scandalous e-mail is sent out by Gossip Girl as the gang's high-school graduation ceremony takes place, prompting Serena to retaliate. Elsewhere, the mean... Full summary

Lily flashes back to her teen years in the '80s, recalling the time she was thrown out of boarding school and reconnected with her family in L.A. Elsewhere, Nate and Blair's prom is... Full summary

Blair plays on Georgina's guilt over her checkered past and ropes her into helping with a scheme. Meanwhile, Chuck and Nate's competition over Blair heats up, and Lily finds a covert... Full summary

A changed Georgina (Michelle Trachtenberg) returns to town. Meanwhile, Chuck and Nate's rivalry for Blair's affections puts their friendship in jeopardy again, and things continue to... Full summary

Serena returns from her adventure in Spain, and Blair makes a secret pact with Nate's grandfather. Nate, meanwhile, uncovers something about the Captain's arrest, and Dan gets a... Full summary