who acts in it?
Blake Lively, Leighton Meester, Kelly Rutherford, Penn Badgley, Chace Crawford, Ed Westwick
Gossip Girl
 The series begins with the return of Upper East Side teenage "it girl" Serena van der Woodsen (Blake Lively) from a mysterious absence. She is reunited with her frenemy Blair Waldorf (Leighton Meester) and her mother Lily (Kelly Rutherford), and she also meets Dan Humphrey (Penn Badgley)—an aspiring writer from Brooklyn who is one of Serena's main love interests throughout the show. Other main characters include Nate Archibald (Chace Crawford), Chuck Bass (Ed Westwick), Jenny Humphrey (Taylor Momsen), Vanessa Abrams (Jessica Szohr), Rufus Humphrey (Matthew Settle) and Ivy Dickens (Kaylee DeFer).
what episode of gossip girl does blair and chuck get married In Season 6 -  In the series finale what is gossip girl? An American teen drama television series
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Gossip Girl [SEP] Introduction
She is reunited with her frenemy Blair Waldorf (Leighton Meester) and her mother Lily (Kelly Rutherford), and she also meets Dan Humphrey (Penn Badgley)—an aspiring writer from Brooklyn who is one of Serena's main love interests throughout the show. Other main characters include Nate Archibald (Chace Crawford), Chuck Bass (Ed Westwick), Jenny Humphrey (Taylor Momsen), Vanessa Abrams (Jessica Szohr), Rufus Humphrey (Matthew Settle) and Ivy Dickens (Kaylee DeFer). The success of "Gossip Girl" led to many adaptations outside the United States. The show received numerous award nominations and won 18 Teen Choice Awards. The CW officially renewed "Gossip Girl" for a sixth and final season on May 11, 2012.