Gossip Girl

Blair and Chuck adjust to their new status as a couple; Serena returns from Europe with many secrets and a complicated relationship with Carter.

Blair begins NYU, determined to keep her Queen Bee status, but Georgina has other ideas; Serena recruits Carter to get even with Chuck.

It's Blair versus Chuck as they both set their sights on a particular item up for bid at Sotheby's; Georgina takes an interest in Dan.

It's Jenny's first day as Queen Bee; A famous actress, Olivia Burke, is assigned as Vanessa's roommate.

Lily and Rufus move up their wedding, but complications threaten to tear them apart; Chuck discovers a secret Carter has been keeping from Serena.

Dan invites Olivia to meet Rufus and Lily, which leads to all sorts of problems for the new couple; Serena and Nate team up to help Carter Baizen.

Serena helps Chuck open his club, but Blair feels left out; Dan is unnerved watching one of Olivia's sex scenes with a former co-star.

Olivia says something she regrets during a talk show appearance and tries to keep Dan from finding out.

Jenny sets her sights on landing the hottest escort for Cotillion. Dan is upset when Olivia (HILARY DUFF) contemplates leaving school.

Dan and Olivia sign up to write and star in a school play, based on an idea by Blair and directed by Vanessa.

Serena is put in an awkward position when Lily invites Tripp and Maureen to join them for dinner; Blair suspects her mother of keeping a big secret.

Chuck wrestles with a past issue; A serious car accident rocks the Upper East Side; Dan and Vanessa try to navigate their complicated friendship.

Chuck tracks the woman he saw at his father's grave; Jenny agrees to help Damien; Nate and Serena get friendly.

Rufus and Lily grow suspect of Jenny's relationship with Damien. Chuck learns more about the woman who may or may not be his mother.

Jenny continues to see Damien who tells Jenny that he wants to have sex with her. Lily thinks to tell the secret that she has up till now concealed.

Eleanor puts Blair in charge of making sure her latest fashion show is a huge success with an important client.

Chuck and Blair are faced with the most difficult decision they have ever faced as a couple. Serena plans a surprise birthday party for Nate.

Chuck offers to throw a wedding for Dorota who insists that she and Vanya have a traditional wedding before her parents arrive from Poland.

When Lily's ex-husband shows up unexpectedly in Manhattan, Serena finally gets the reunion she has so desperately wanted with her father.

Will's return to the Upper East Side continues to stir up problems for Serena.

When things get tense between Rufus and Will, Serena chooses to stand behind her father. Rufus is made to feel like an outsider in his own familly.

Blair decides if she'll meet Chuck at the top of the Empire State Building. A Gossip Girl bomb involving Dan explodes. Georgina (MICHELLE TRACHTENBERG) returns.