Plus Size Vampire Costumes Dressing up as a vampire for Halloween is a classic costume idea that is not only rich in tradition but has many modern influences to have fun with as well. Recreate your own version of one of these 'undead' characters for a fang-dango great time this Halloween! Plus Size Vampire . 35 products - Dress up in one of our plus size vampire costumes for adults and fit right in at any bloodbath. Feast upon the fearful humans and show off your sharp fangs! Blood Vampire Adult Mask. $ Cornelius Adult Mask. $ Nosferatu Adult Mask. $ Gothic Robe Plus Size Costume 5/5.