Halloween costumes are one of the most incredible things we can use to make the event totally unforgettable and be sure that our Instagram photos will be bright and eye-catching! But, despite the fact that the world keeps fighting against gender prejudices, these costumes mostly have a truly noticeable difference between those aimed at men and those aimed at women. But these crazy brave people are willing to break stereotypes at least once, so they're willing to exchange their costumes with their best friends. Enjoy!