Not sure if this has been said already, and perhaps this is even a bug that was never intended. Costume hats, like the celebration hat and the witch hat, remove your hair and make you bold under them. The look would be awesome WITH the hair intact, and not eaten. So, fix this please.
Most helmets also remove your hair, and I suppose for those helmets it makes sense because they are big and all. But costume hats should not do that…