Jennifer Murdley's Toad (Magic Shop Book, Bk. 3)

Jennifer Murdley, a homely fifth-grader who would give anything to be beautiful, accidentally stumbles into a magic shop and purchases a very ugly toad. The toad, it turns out, can talk and ends up getting Jennifer into the worst trouble of her life. This madcap, head-spinning adventure is also a thought-provoking story about the nature of true beauty.