Feeling the pressure to make her first Waldorf Designs fashion show a success, Blair must rely on help from an unlikely source, but some unexpected scheming causes a scandal on the runway. 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.The CW officially renewed the series for a sixth season on May 11, … The sixth and final season of the American teen drama television series Gossip Girl premiered on The CW on October 8 and concluded on December 17, 2012, consisting of 10 episodes.