With over 20 million books in print, Sophie Kinsella, the pen name of Madeleine Wickham, is one of the U.K.'s most successful comic novelists. The author of the bestselling Shopaholic series as well as the novels Can You Keep a Secret?, The Undomestic Goddess, Remember Me?, Twenties Girl, and her latest, Wedding Night, she recommends favorite marriage-minded novels to B&N.com.