Unconfirmed Upcoming Episode Info 38 (20) "Remains of the J" TBA TBA March 30, 2009
Serena decides to throw Jenny Humphrey an intimate party for her sixteenth birthday, but things get out of control when Poppy Lifton (guest star Tamara Feldman) turns the small gathering into a huge social event. In a moment of weakness, Vanessa agrees to help Chuck with a scheme to make Blair jealous, while Vanessa sees an opportunity to make Nate jealous at the same time... Rufus learns that Dan will not receive financial aid at Yale and tries to figure out another way to cover the cost of his education. Blair reveals some unresolved feeling between her and Nate.
39 (21) "Seder Anything" TBA TBA April 20, 2009
Cyrus Rose returns. When Blair and Chuck team together to expose Serena's new beau, Nate sees a bond between them and tries to compete with Chuck by asking Blair to move in with him, which causes rivalry between the two and starts a game of "Who Will Win The Waldorf" with unexpected results.
40 (22) "Loose Ends" TBA TBA April 27, 2009
Nate and Blair share a passionate evening together, leading to consequences that change them both. Serena receives surprising news regarding a past friend. Chuck meets someone from his past, who is determined to ruin him.
41 (23) "Sparks" TBA TBA May 4, 2009
43 (24) "Eyes Wide Open" TBA TBA May 11, 2009
No Doubt, after a four year hiatus, will appear and perform Adam & the Ants song ' Stand And Deliver' for the first time on Gossip Girl. This will introduce the Gossip Girl series spin-off starring Brittany Snow.
44 (25) "The Curious Case of Bart Bass" TBA TBA May 18, 2009
Chuck learns the truth about his father. Blair chooses who she wishes to be with, shocking everyone.