According to IMDb.com, there are two "Mean Girls" films, as of 2015. The original "Mean Girls" was in theaters in 2004, and the sequel, "Mean Girls 2," debuted in 2011.
The cast from the original "Mean Girls" included actresses Lindsay Lohan, Rachel McAdams and Tina Fey. Rosalind Wiseman's book "Queen Bees and Wannabees" served as the basis for the screenplay. "Mean Girls 2" was released as a television premiere on ABC Family in January 2011. The only cast member to return from the original "Mean Girls" was actor Tim Meadows. The sequel did not receive the same critical acclaim as its predecessor.