hmmm właśnie znalazłam jakiś wywiad z Ziegesar, autorką książki, która mówi, że film jak narazie nie jest jeszcze w produkcji i nie ma żadnych obsadzonych ról!! Sami zobaczcie:

Who are cast for the Gossip Girl movie?
Answer: There are none. The Gossip Girl movie is not in production. Reason: the screenplay isn't actually written yet since Amy Sherman was said to be too busy. Without a screenplay, it is impossible for any actual cast. Casting from IMDB is most likely to be just speculation.
Who does Ms. Von Ziegesar want for casting?
Answer: She mentioned that personally she would like the movie to have unknown actors. It would be cool if it they tried using real private school girls and guys to make something of a more Indie film rather than with the usual popular casting picks.
How many GG books will there be?
Answer: She said 11 books.
Who is Gossip Girl?
Answer: Unknown. Does it really matter quite that much?

Jeśli to jest na prawdę autentyczny wywiad, to raczej długo jeszcze potrwa zanim zobaczymy film...