Witch Switch: AND Moonlight Mischief by Maeve Friel
"Prrrrrooom," Jessica purred, in a very pleased voice. "I'm a cat." Jessica is learning the Witch Switch - how to magically change shape. But although being a cat (or butterfly or teapot!) can be great fun, it's also a tiny bit scary. What happens if a Switch goes wrong? An enchanting new adventure for Jessica, everyone's favourite witch-in-training!