Midnight Mistress | Adult | Extra Large - The Midnight Mistress adult costume is the perfect blend of sexy and spooky. The velvet cropped top and floor length skirt with slits give you the modern day Elvira or Morticia Addams look that you want. Transform yourself into a vampire or a witch with this striking costume. Womans Costumes, , Underwraps, Midnight Mistress | Adult | Extra Large