The sixth and final season of Gossip Girl, an American teen drama based upon the book series by Cecily von Ziegesar and developed for television by Josh Schwartz and Stephanie Savage, is set to air in October. The CW officially renewed the series for a sixth season on May 11, 2012. It was confirmed that this will be the show's final season and will consist of 10 episodes and with the possibility of a retrospective.
Blake Lively, Leighton Meester, Penn Badgley, Chace Crawford, Ed Westwick, Kaylee DeFer, Kelly Rutherford and Matthew Settle all returned as series regulars. Michelle Trachtenberg got upgraded to a special guest star for this season. Former recurring star, Desmond Harrington and Robert John Burke are also returning as guest stars for the season. Former regular Jessica Szohr is highly rumoured to appear again as Vanessa Abrams for an episode arc leading to the finale, most likely returning to her position of series regular mid-season, however Taylor Momsen hasn't commented on returning since she publicly stated that she wants to 'quit acting forever'.
 
On July 7, 2012, actress Andrea Gabriel, best known for her role on Lost, had been cast as a businesswoman from Dubai. 7th Heaven alum Barry Watson landed a guest-starring role as young entrepreneur Steven Spence who will quickly sweep Serena off her feet. French model and actress Zoe Aggeliki was cast as Sage, Serena's latest enemy and Steven's daughter.
 
Zap2it noted the appearance of British model Alexa Chung. Chung will be playing herself in story that involves Blair's new fashion line. Former Skins star Sofia Black D'Elia has been seen filming scenes with Blake Lively for the upcoming new season.
 
Former Gossip Girl guest stars Tamara Feldman and Yin Chang have been reported to return to the show for its final season as Poppy Lifton and Nelly Yuki respectively.