First photo of 'Frozen' princess Anna and her boring outfit in 'Once Upon a Time' Kelly Lawler. USA TODAY.

Frozen costumes will no doubt be very popular this year for Halloween, but you're way better than a cheap discount-brand Anna costume with one of those fake-looking Barbie-doll hair wigs.

Anna and Elsa also needed practical travel outfits that would allow them to move (and leap, and swim), not the long gowns of the first film. But raising hemlines turned out to be anything but simple.