To celebrate being a couple, Blair and Dan host a glamorous British-themed Salon. Serena and Diana face off.
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.
Chuck invites Jack to town; Blair and Dan attempt to consummate their new relationship; and Ivy finds an unlikely ally in William.
Chuck and Georgina partner up in a scheme, with an unpredictable outcome. A family crisis brings William van der Woodsen to town.
Dan's book is showcased by comedy troupe Upright Citizen's Brigade, and Blair tries to prove Serena's suspicions wrong.
It's Valentine's Day, and Georgina, intent on stirring up drama, decides to crash Nate's Valentine's Day party.
Blair struggles to decide about her future and Serena takes the blame for an incident with Gossip Girl in order to protect someone she loves.
As Blair is about to marry Prince Louis, the return of Georgina Sparks might make the royal affair a royal disaster.
Blair prepares for her bachelorette party. Nate teams with a surprising ally to gather evidence about Chuck and Blair's car accident.
Through a series of emotional flashbacks, Blair reveals to Serena what really happened in the aftermath of her tragic car accident with Chuck.
Lily officially introduces Charlie to New York society with a party. Meanwhile, Charlie's ex-boyfriend, Max, throws a wrench into her future plans.
Lily, Charlie and Serena eagerly anticipate the Studio 54 party thrown in CeCe's honor. Nate takes on a new role at the Spectator.
Serena plans a dream bridal shower for Blair, but Chuck and Dan aren't invited. Nate and Serena make a discovery in Diana's war against Gossip Girl.
Attending a performance the provocative theater experience "Sleep No More" means masks, anonymity and some surprising romantic twists. But for whom?
Blair makes her former minions and Charlie compete for the coveted bridesmaid spots in her upcoming wedding. Nate uses Charlie to make Diana jealous.
Serena must choose between her new job and her relationship with Dan. Diana expects Nate to help out when an unexpected surprise delays her launch.