<P> Gossip Girl is an American teen drama television series based on the book series of the same name written by Cecily von Ziegesar . The series , created by Josh Schwartz and Stephanie Savage , originally ran on The CW for six seasons from September 19 , 2007 , to December 17 , 2012 . </P>
who are the characters in gossip girl based on
the book series of the same name written by Cecily von Ziegesar