Halloween Costume Party

You and your four friends are hosting a Halloween costume party with a gender-bending theme... and the supposedly haunted house where the party is taking place possesses a ghost that can transform people based on the characteristics of the costume they are wearing. You all soon begin to see yourselves as your respective costumes. And others see them as female as well. You and your friends undergo transformations. How much power does this spirit have? Is reality itself shifting? Please let me know of any issues; I'll do my best to improve! Enjoy :)