You can use breast enhancement exercises to increase the size of the muscles under your breasts. This can make your breasts seem to be bigger. It doesn’t actually grow your breast or cup size. Rather, it gives the illusion that your breasts are bigger than they actually are. This is one of the myths about how to increase breast size naturally. Jul 07, 2000 · Bigger Breasts, No Surgery! Women have heard that one before, with numerous creams, herbs, and other remedies on the market promising easy .