Your child will be ready to Let It Go this Halloween if you let her wear this girl's Frozen Elsa deluxe costume. Disney's Frozen was a smashing success from the moment it hit theaters, with many people calling it the studio's best film in decades. Elsa instantly became one of the most popular Disney princesses of all time, not least of all because of the song she sings when she flees Arendelle and leaves it frozen in an eternal winter. This officially licensed Disney costume comes with a gorgeous blue gown that's based on the one Elsa creates while she sings Let It Go as well as a Vacuform tiara and an adjustable belt. Add a wig and a pair of slippers to complete the look and your child will put your town under her spell just like Elsa does with Arendelle.