From Alexandra Potter, the Sunday Times top ten bestselling author of So, I Met This Guy . . ., comes Who's That Girl – a heartwarming and hilarious romantic comedy that looks at life, love and what might happen if you could turn back time . . . Charlotte and Lottie have absolutely nothing in common – except they’re the same person. Thirty-something Charlotte has a high-flying PR agency, a serious boyfriend and all the trappings of success – she’s living the dream, so why is it so stressful?Twenty-one-year-old Lottie has just moved to London with dreams of becoming a writer. Carefree and single, she’s having fun – and on the brink of making some big mistakes. So when a cosmic glitch brings Charlotte face to face with her younger self, she hatches a plan to teach her all the things she knows now: wear sunscreen, stay away from PVC trousers and Do Not Sleep With That Guy. But what she doesn’t expect is Lottie has a few lessons of her own. And rewriting your past can seriously mess with your future . . . Praise for Alexandra Potter:'The new Bridget Jones for our times' - Daily Telegraph'Say hello to a book that will have you laughing with every page, whether you're 20, 40 or 80' – Heat'Brilliant! Laughing out loud' – Emma Gannon'Funny but layered, light-hearted but surprisingly deep' – Red'A thrilling, witty, wonderful adventure with a grand splosh of self-discovery' - Milly Johnson'Warm, witty and wise . . . An absolute triumph!’ – Mike Gayle