Celebs are used to dressing up for roles, and getting all fancied up for awards night, but when they get dressed up for Halloween most stars spare no expense on their costume.
It makes sense that someone who has access to the best costumers and makeup artists in Hollywood would want to look their best when going out on Halloween night, but sometimes the best are busy and you're left with a person who makes mascot costumes.
And nothing says celebrity Halloween costume like a sexy version of something, like this strappy Teenage Mutant Ninja Turtle number worn by Rihanna, a costume designed to make fans question their feelings for the TMNT.
See all the good, bad and ugly Celebrity Halloween Costumes of 2014 here