The princess tales volume I

A kind sister and a cruel one. A charming prince. A spiteful fairy. A hundred year snooze. A pea under a pile of mattresses. A kiss. All the familiar ingredients but why is the punished sister happy? Where did that extra prince come from and what does a flock of balding sheep or a fleck of tuna in a chocolate cake have to do with anything? Gail Carson Levine has waved her magic wand over three well-known fairy tales and presto! They are transformed and sparklingly funny-in these delightful retellings 
The Fairy's Mistake