All those poor unfortunate souls who don't have this costume, but you don't have to be one of them. It doesn't cost your voice in order to get your hands on this outfit, so it should be a no brainer that you should buy it. This is a great costume that comes included with a black sleeveless dress that is lined in purple. The hem of the dress features a black bottom that turns into tentacles like an octopus. The bottom of the tentacles are purple and shine, giving off a signature look of this hit Disney villain. Ursula tried to sabotage The Little Mermaid into being her slave. You don't have to live under the sea in order to grab a great costume, you just have to use our site.