E. Lockhart

Emily Jenkins (born September 13, 1967), who sometimes uses the pen name E. Lockhart, is an American writer of children's picture books, young adult novels, and adult fiction. She is known best for the Ruby Oliver quartet (which begins with ''The Boyfriend List''), ''The Disreputable History of Frankie Landau-Banks'', and ''We Were Liars''. Provided by Wikipedia