Harry Potter a little more ghostly. The Moaning Myrtle is one of the Hogwarts castle ghosts. She is the ghost of the former student Myrte Elizabeth Warren, who was killed by the basilisk in the girls’ toilet and is now haunted there. Therefore, along with her glasses, she still wears her Ravenclaw cloak , only now in a ghostly gray. So this License costume offers the versatile use as a Halloween costume as well as theme parties. With a gray-silver wig and pale make-up , the somewhat special ghost look is perfect.