Anything that is sparkly is ought to get a person's attention. Gleamy, shiny, sparkly like a little star or diamond, this costume very well shows off such wonderful qualities. Introducing the Sparkle Princess Costume for Girls. Transform yourself into a royal princess and upgrade the look with this sparkle-inspired theme. You can consider yourself to be a diamond princess, a jewel princess, or anything else that you consider to be shiny and sparkly. Let your imagination run free with thousands or millions of possibilities as you think how you can upgrade this costume even more to stand out at the party. A perfect costume for popular costume holidays like Halloween, or perhaps even a school play where there's a princess. You can even become a princess for your birthday because the special day is only once a year and you want to feel your best, and obviously look your best in a costume like this one.