Who's that Girl? is a captivating novel written by Mhairi McFarlane. The story revolves around Edie Thompson, a young woman who finds herself in a series of hilarious and awkward situations. Edie's life takes an unexpected turn when she becomes the 'other woman' in a high-profile celebrity scandal. As she navigates through the chaos, Edie discovers the importance of self-discovery, friendship, and finding true love. With witty dialogue, relatable characters, and a heartwarming storyline, Who's that Girl? is a must-read for fans of romantic comedies and contemporary fiction.