When you're stuck with the name Beauty, people expect a lot from you - like beauty and grace and courage and a sense of style. But what if you have none of these things? What if all you like to do is read books and search for odd objects that other people drop? Oh, and you have a perfect older sister who really should have had your name instead of you.
And when you're a prince, you're supposed to be athletic and commanding and brave and tall. But what if you are none of those things? What if all you like to do is play the bagpipes (badly), study the stars, and try to figure out how to make worms live forever? Oh, and you also have a perfect older brother who is a lot more princely than you'll ever be.