Oh, Beauty is lovely, and probably my favorite novel-length retelling--I have a huge soft spot for picture-book versions of the story, too, and my favorite of those has to be a tie between the version by Mercer Mayer and the version by Angela Barrett. Both of them are absolutely gorgeous but set up in very different ways; the Mercer Mayer version is a more straight retelling, and Angela Barrett's transplants everything into Victorian times. There's also an interesting middle-grade version called Beastkeeper, where it's the main character's father who transforms into a beast. I loved the premise of that one, but the book itself is very odd and (in my opinion, anyway) doesn't quite follow through on the awesomeness of that set-up.