As such, you should try getting a white-haired wig instead that’s already styled in the same fashion as Geralt’s hairdo, and the great about it is that you can use it in other costumes where you need long white hair, such as a World of Warcraft Lich King cosplay. Maxwell Kuehn, 10, from left, his father, Donovan Kuehn, and Wally Frueauf, 10, captain marvel halloween costume wear costumes from the Star Wars movie to Awesome Con on Friday.