Episode 1 | Yes, Then Zero

Serena loves her new job in Hollywood, but makes a costly misstep when she tries to impress her boss. Chuck and Nate arrive in Los Angeles as the last stop of their Lost Summer trip, joining Serena at a glamorous Hollywood Hills p...

Episode 2 | Beauty and the Feast

Nate reconnects unexpectedly with Diana, who offers him an exciting opportunity. Serena forces Charlie to decide which world she wants to embrace. Dan seeks out Chuck's help to stop the publication of his book, but discovers it is...

Episode 3 | The Jewel of Denial

Nate must decide whether to cross moral lines at Diana's request. Dan has figured out who is publishing his book, and seeks help to stop it, but he ends up in the spotlight anyway. Chuck helps Dan come to terms with his fate, just...

Episode 4 | Memoirs of an Invisible Dan

After much deliberation, Dan decides to gather Serena, Blair, Nate, Chuck, Rufus and Lily to reveal the truth about his book in the hope that they will support him at his book party. Meanwhile, Blair and Louis hit a crises point a...

Episode 5 | The Fasting and the Furious

In the midst of celebrating Yom Kippur with family and friends, Blair and Louis find themselves in a power struggle with Louis' family. Serena's boss puts Serena in the awkward position of choosing between her new job and her rela...

Episode 6 | I Am Number Nine

Blair makes all of her former minions and Charlie compete to secure the coveted bridesmaid spots in her upcoming royal wedding. Nate is tired of keeping his relationship with Diana secret, so he decides to use Charlie to make Dian...

Episode 7 | The Big Sleep No More

Several of our favorite Upper East Siders attend a performance of Punchdrunk's provocative theater experience, "Sleep No More," which translates to masks, anonymity and some surprising romantic twists by the end of the evening. Me...

Episode 8 | All the Pretty Sources

Serena is hard at work planning a dream bridal shower for Blair, but it should come as no surprise that Serena has to plant some false information about the shower in order to keep Blair from finding out all the details. Chuck and...

Episode 9 | Rhodes to Perdition

Lily, Charlie and Serena eagerly anticipate the Studio 54 party being thrown in CeCe's honor. Nate takes on a new role at the Spectator, but his first big story turns out to be about someone he knows all too well.

Episode 10 | Riding in Town Cars with Boys

Lily throws Charlie a party to officially introduce her to New York society. Meanwhile, Charlie's ex-boyfriend, Max, throws a wrench into Charlie's future as an Upper East Side princess. Dan decides it may be time to tell Blair th...

Episode 11 | The End of the Affair?

Blair has been mysteriously absent after she lost the baby, which lead Louis and Chuck to suspect her of having an affair. Eventually they find out that she spends a lot of time with Dan - but is it for the reasons they think? Non...

Episode 12 | Father and the Bride

Blair prepares to celebrate her upcoming royal wedding with a bachelorette party, but others scheme behind her back to make this a night to remember. After discovering the truth behind Chuck and Blair's car accident, Nate joins fo...

Episode 13 | G.G.

The much-anticipated 100th episode will open with a musical dream sequence featuring Serena, Blair and all the men in their lives. Also, while Chuck wrestles with the reality that Blair is about to walk down the aisle with Prince ...

Episode 14 | The Backup Dan

Blair must make a difficult decision about her future, the consequences of which could hurt those she loves most. Serena takes the blame for an incident with Gossip Girl in order to protect someone she loves. Georgina smells the s...

Episode 15 | Crazy, Cupid, Love

It's Valentine's Day on the Upper East Side and Blair can't resist playing cupid for someone she loves. Georgina is intent on stirring up more drama, so she decides to crash Nate's Valentine's Day party. Meanwhile, Serena is shock...

Episode 16 | Cross Rhodes

Dan feels honored when he learns that Upright Citizen's Brigade is performing excerpts from his book, Inside. Blair tries to prove Serena's suspicions wrong in order to save their friendship. On her way out of town, Ivy ends up on...

Episode 17 | The Princess Dowry

Blair thinks Cyrus may have found a potential loophole in her prenup. Chuck and Georgina partner up in a scheme, but it has an unpredictable outcome. Meanwhile, a family crisis brings William van der Woodsen back to the Upper East...

Episode 18 | Con-Heir

Chuck invites Jack (DESMOND HARRINGTON) to town, Blair and Dan attempt to consummate their new relationship and Ivy finds an unlikely ally in William (BILLY BALDWIN).

Episode 19 | It Girl, Interrupted

Serena tries to make a reluctant Lola the next It Girl of the Upper East Side, starting with modeling at a Kiki de Montparnasse show.

Episode 20 | Salon of the Dead

To celebrate their official coming out as a couple, Blair and Dan host a glamorous British-themed Salon, including guests Julian Tepper and Jenna Gribbon (founders of The Oracle Club). Lola lands the audition of a lifetime, but Go...

Episode 21 | Despicable B

Blair feels like her Upper East Side status might be slipping away and devises a plan to assure that doesn't happen. Meanwhile, Lily throws a family gathering - including William, Carol and Lola - in an attempt to prove the van de...

Episode 22 | Raiders of the Lost Art

Chuck, Nate, Blair, Serena and Lola team up to uncover what they think is an explosive secret between Diana and Jack. Meanwhile, Dan is offered a prestigious fellowship in Rome for the summer.

Episode 23 | The Fugitives

Serena poses as Blair at an important meeting. Ivy and Lola (ELLA RAE PECK) team up to help Chuck. Nate makes a decision about the future and Diana (ELIZABETH HURLEY).

Episode 24 | The Return of the Ring

When Gossip Girl goes after Blair as she's never done before, Serena admits she may have unintentionally played an important role in Blair's latest nightmare. Meanwhile, Nate invites Lola to move in with him, and Lily must make a ...