The fifth season of the American teen drama television series Gossip Girl premiered on The CW on September 26, 2011, and concluded on May 14, 2012, consisting of 24 episodes.Based on the novel series of the same name by Cecily von Ziegesar, the series was developed for television by Josh Schwartz and Stephanie Savage.In the book, Dan described Serena as the "old Serena": drinking, dating teachers, being shallow, partying, reckless, and having random sex.Nate doesn't receive a character description, but is joined with Eric (a younger, gay character with political relatives).While her stepfather and mother, Cyrus and Eleanore, decide to throw a Yom Kippur dinner party to celebrate, Sophie and Beatrice try to get Blair to accept a series of conditions following the marriage.Blair naturally refuses, and Louis must choose between standing beside Blair or his mother.
Hugo Becker also reprises his role as Blair's love interest, Prince Louis Grimaldi of Monaco.
Also, Nate finds Ivy's missing cell phone with her text messages from her boyfriend Max, but does not make the connection that Ivy and Charlie are one and the same.
Dan is about to be announced as author of Inside so he gives a copy of the book to Blair, Serena, Nate, Chuck and Rufus hoping they will be supportive at his upcoming book party.
As she is fitted for her wedding dress, the dress fitter says that by the time of her wedding she will be showing.
Also, Serena runs into Charlie in Los Angeles still unaware of her real identity: Ivy Dickens, who has moved to California with her boyfriend, Max.
Also, Serena's boss tells her to get the film rights for Inside and that she has only one week, forcing Serena to choose between Dan and her career.