I have tried several things to give me boobs that look realistic. Large, soft nerf balls work very well in a large bra. The balls are very comfortable and give me a size 38″ chest. I have also tried water balloons but found they are too cumbersome and take too much time to fill each time and drain afterwards. I also tried a cheap set of plastic tits I bought at a halloween supply store, but found them to be uncomfortable and not easy to use a bra with them.