4. Mean Girls

Did you know that Tina Fey’s Mean Girls is actually based on a book? The novel is Queen Bees and Wannabes by Rosalind Wiseman. The original book is a self-help guide to teach girls how to deal with those obnoxious high school cliques. Tina Fey’s hilarious writing, Mark Waters' directing, and the talented cast make Mean Girls the movie so much better than the original book!