The simplicity pattern a pp mentioned is great. My dd wanted to be sleeping beauty for halloween a few years ago. So off we went but she did not like the pink so my sister volunteered to sew a blue one for her. She used the simpicity pattern. When I was buying the material dd asked if it could look like when the fairies were fighting over it. She wanted it both pink and blue. So my sister made it half blue and half pink. We had it made large so dd can still wear it. Here is a picture of dd in in at the Princess Tea last august: