Lilli Cooper (born March 4, 1990) is an American actress and singer.
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Mean Girls is a musical with music by Jeff Richmond, lyrics by Nell Benjamin, and a book by Tina Fey. It is based on the 2004 film of the same name written by Fey, which, in turn, was inspired by the book Queen Bees and Wannabes by Rosalind Wiseman.
