You'll be looking holier than thou this year when you get all dressed up in our White Nun Adult Costume. Whether you're going for a classic nun look or want to dress this one up with some makeup to become an evil nun, you certainly can't go wrong with this one. Featuring a beige long dress gown with a habit and a dangling cross, you're going to have the time of your life showing up to the party all decked out as a sister of the Church this year.