A Magical Transformation Ariel spent a lot of time looking at the land in a world apart of her own. Of course, knowing that Ursula had the ability to let Ariel take a long walkabout is probably part of what made Triton nervous. With a little bit of help from one of our favorite costumes, you'll be able to sing out a few bars of your favorite tune and join the world of The Little Mermaid. Fun Details Transform into one of the most notorious (and beloved) Disney villains out there with this officially licensed Little Mermaid Ursula Prestige Costume! Not only does this multi-part costume let you take on Ursula's look, you can transform the silhouette to your liking on the spot! Start with the long-sleeved mesh shirt to give yourself and undersea under layer. Next, the satin bodice is trimmed with shiny sequins that turns into layers of glittering tulle over a black skirt. The conch shell necklace is a critical component for this magical ensemble. That may be perfect for your night under the waves, but you can bring the whole look to life when you inflate the overskirt to complete your transformation with a set of tentacles at your waist!