I just ball up a pair of tights and stuff into each cup, at least when I take them out I don't have to hide them from the wife, I am thinking of buying breast forms, but I think I will go for the Gel forms rather then silicon ones. Gel forms are a hell of a lot cheaper and will not leak like silicon.
Gel forms can be purchased from here
http://www.supergelproducts.com/index.html
