Here are princesses for the Rebel Girls generation: bold, empowered, and determined to be true to themselves.“Mirror, mirror on the wall . . . what makes a princess excellent?” When an enchantress flings her magic mirror into our universe, its reflection reveals princesses who refuse to be just pretty, polite, and obedient. These are girls determined to do the rescuing themselves. Princess Leila of the desert protects her people from the king with the black-and-gold banner; P