Madeleine Sophie Wickham is an English author of chick lit. She has written several successful stand alone novels as Madeleine Wickham and is best known for her work under the pen name Sophie Kinsella. The first two novels in her best-selling Shopaholic series, The Secret Dreamworld of a Shopaholic and Shopaholic Abroad were adapted into the film Confessions of a Shopaholic starring Isla Fisher.