These are the best knock-off costumes we've seen for 2016. Deep Sea Siren Mermaid sure looks a lot like Princess Ariel from "The Little Mermaid." You can find the Deep Sea Siren Mermaid costume here.

(Because you will be, after all.) Happy hauntings from the best curvy costumes of the year! Our favorite thing about this Alluring Sea Siren Mermaid Costume ($80-$90) is the purse; just look at it!