Put your sewing skills to work. Using a pattern for a gypsy outfit, you can customize it into a Princess Jasmine costume.
Link: http://family.go.com/crafts/craft-784273-princess-jasmine-costume-t/
Making a Princess Costume
Making a Space Princess Costume
Costume Ideas for Someone Who Loves Fantasy and Computer Games?
Making a Princess Amidala (Star Wars) Costume
Use Washable Glue to Attach Gems To Hair
Halloween Pet Costume: Minnie Mouse
Mary Poppins Costume