Writer and Actress Tina Fey She wrote the screenplay for the new movie Mean Girls. It's based on the book, Queen Bees and Wannabes, by Rosalind Wiseman. Fey also co-stars in the film, along with Lindsay Lohan, Tim Meadows, Amy Poehler and Ana Gasteyer. Fey is co-head writer and writing supervisor for Saturday Night Live. She is the show's first female head writer. She also co-hosts SNL's Weekend Update. She and the writing staff won an Emmy Award for their work in 2002. Before SNL, Fey wrote and performed for the famed Second City in Chicago.