Claim: The Undomestic Goddess, published on June 2005 in the UK by Bantam Press, was written by Sophie Kinsella.
Evidence: The Undomestic Goddess is Sophie Kinsella's second "stand-alone" novel, published by Dial Press Trade Paperback on April 2006 (UK). June 2005 (UK) Bantam Press 
Sophie Kinsella
(pseud. Madeline Wickham) June 2005 (UK) Bantam Press