From off-the-shoulder dresses to dazzling gowns, these prom dresses will make you feel like a Disney princess on prom night. ... To match Ariel's aesthetic, go for a green dress with tons of sparkle.

Her Universe Ariel Athletic Dress – $69.99 The Ariel dress is a purple-green ombré, with solid purple straps. Purple draped fabric is around the neckline and waist.