Princess, Countess, Baroness, Duchess… This one is a Duchess, a Dead Duchess. She really looks dead ! The wig however is sold separately, I added the link if you wanted to get it. It’s black and white, it’s gothic, it’s Halloween minded and that’s great. Even greater is that it’s inexpensive, from Moon Costumes :
Check the Wig too, which would suit some great other deadly or ghostly creature costumes.