How to: Grey Lycra body suit, white fishnet playsuit, bald cap, fabric paints. The animatronic Ava will no doubt prove to be a popular Halloween costume this year, having already been a hit at conventions around the world. The delightfully cunning android is no one's toy and therefore her likeness is a perfect costume to keep unwanted playmates at bay. Although many of you will be shaking your heads, claiming the very idea to be too much effort, you'd be surprised how authentically you can make this costume appear seamless to the rest of your body and also just how cheap it can be! Most of this costume can be drawn on to fabric, and a few well placed bits of fishnet fabric and spandex will work wonders.