You know you've found the perfect Halloween outfit when it has the curve-hugging fit of a cocktail frock and the chilling perfection of the sea's most dangerous predator. This shark dress costume offers a sharp-edged but smoothly contoured complexity that is sure to draw every eye in the room. We particularly like the attached hoodie which lets you go into full shark mode if someone tries to cut in line at the party buffet table or steal your date on the dance floor. The high contrast white and blue colors also make you easy to spot in the dark, and adding some glowing accessories would also turn this into the perfect outfit for a Halloween rave.