More than cake, more than fireworks, and even more than Christmas, Fiona and Frieda love fairy tales. Every day at recess, they act out their favorite stories. Then, on the fifty-seventh day of third grade, something amazing happens. Magic sparkles fill the air and the girls discover they have magic rhyming powers. All of a sudden, Cinderella's sitting at the bottom of the curly blue slide, and she's crying harder than a kindergartener on the first...