Remember Me? by Sophie Kinsella
Twenty-eight-year-old Lexi wakes up in the hospital and can't remember how she got there. Her confusion worsens when the nurse tells her she wrecked her Mercedes the night before – because she'd never gotten her driver's license. Or owned a car, for that matter. Lexi soon discovers that she suffered a head injury in the accident, and the injury caused amnesia. She's lost the past three years of her life and can't figure out how she went from a 25-year-old struggling sales girl to a 28-year-old successful, married businesswoman.
Sophie Kinsella's novels, like the Shopaholic series, always mix an adorable main character with a funny plot. Though the amnesia storyline is somewhat predictable, the novel is hilarious and charming. It's the perfect summer read! ---Maggie Marton