Twenties Girl by Sophie Kinsella

In this delightful and whimsical tale, a young woman named Lara finds her life turned upside down when she starts seeing the ghost of her great-aunt Sadie, a spirited flapper from the 1920s. Sadie enlists Lara's help to find a missing necklace, leading them on a humorous and heartwarming adventure through the past and present. As they navigate family secrets, romance, and self-discovery, Lara learns valuable lessons about love, life, and the importance of embracing one's true self, all while forming an unexpected bond with her eccentric ancestor.