Mean Girls is a 2004 American teen comedy film. Mark Waters directed, and Tina Fey wrote the screenplay, which is based in part on Rosalind Wiseman's non-fiction book Queen Bees and Wannabes, which describes female high school social cliques and the damaging effects they can have on girls. Lindsay Lohan stars. The supporting cast features Rachel McAdams, Tina Fey, Lacey Chabert, Lizzy Caplan, Daniel Franzese, Jonathan Bennett and Amanda Seyfried. Saturday Night Live creator Lorne Michaels produced the film. Screenwriter and co-star of the film, Tina Fey, was a long-term cast member and writer for SNL. Also featuring appearances from SNL cast members Tim Meadows, Ana Gasteyer, and Amy ... more on Wikipedia