Twelve Dancing Princesses by Marianna Mayer

This is possibly the best children's version of this story I've come across. The pictures are beautiful with attention paid to detail. The illustrations are kind of reminiscent of classical art... whatever era that is, but you get the idea from the front cover. There's a lot to look at in any case. The storytelling isn't bad either. The author knows how to put a decent sentence together.

This story is probably what I would (in this day and age) consider to be a 'classically told fairy tale. A must read.