Gossip Girl

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 lifestyle.

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.

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 Scott.

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 Banks), an actress co-starring in Olivia's movie.

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 Bree.

Vanessa vies with Blair for the honor of delivering the freshman toast at NYU; Dan invites Olivia to meet Rufus and Lily; Serena and Nate try to help Carter.

Chuck asks Serena to spread the word about his new hotel; Blair tries secretly to help Chuck; Dan watches one of Olivia's sex scenes; Jenny must choose between her role as Queen Bee and her friendship with Eric.

Olivia tries to keep Dan from finding out what she said during her appearance on Jimmy Fallon's talk show; Blair makes a new friend and takes her to a party at Chuck's hotel in hopes of making Serena jealous.

Jenny tries to land the hottest escort for Cotillion; Chuck and Nate try to help Serena and Blair repair their friendship; Olivia considers leaving school for a movie project.

Blair tries to impress students at NYU with a private Lady Gaga concert; Serena turns to Nate for support during a difficult situation; Jenny agrees to do a favor for Chuck.

Blair suspects her mother of keeping a big secret from her; after having a fight with her mom, Vanessa shows up on Dan's doorstep for Thanksgiving; Chuck tells Nate he has potentially damaging information about one of their friends.

Chuck struggles with an issue from the past; a car accident rocks the Upper East Side; Vanessa and Dan try to navigate their newly complicated friendship.

Serena and Nate explore the boundaries of their friendship; Jenny accompanies Damien to a state dinner; Rufus tries to avoid Lily.

Lily and Rufus become suspicious of Jenny's relationship with Damien; Vanessa and Dan try dating other people.

Damien pressures Jenny; Lily shares her secret with Rufus; Chuck makes a difficult decision about his hotel.

Chuck is again at odds with Jack Bass (Desmond Harrington); Eleanor puts Blair in charge of making sure the fashion show is a success; Jenny learns that Agnes (Willa Holland) will be one of the models.

Blair and Chuck face a difficult decision that tests their relationship; Jenny tries to sabotage Serena's efforts to plan a surprise party for Nate.

Dorota asks Chuck and Blair to be a part of her wedding; Serena secretly meets with Carter; Rufus discovers that Lily has been lying about her whereabouts.

Serena's father (William Baldwin) visits Manhattan unexpectedly; Nate and Serena continue to have relationship issues; Dan gets upsetting news.

Jenny's deception strains her relationship with Serena; Blair visits the Columbia campus; Dan discovers that Vanessa has been keeping another secret from him.

Tension builds between Rufus and Will; Jenny shares information that could destroy Rufus and Lily's marriage; Chuck makes one last grand gesture in hopes of winning Blair back.

Blair must decide if she wants to have a future with Chuck; a gossip bomb involving Dan causes problems for Nate and Serena; Georgina returns with an agenda.