I'm not sure if any of you have heard about this, but doctors in Japan have managed to transplant fat from other areas of the body, such as the buttocks and thighs, and inject it into the breasts after being enriched with the patient's own stem cells. Once introduced into the breasts, the fat ultimately becomes living tissue and is essentially a natural enlargement.
It would be nice if this technique gained popularity internationally.
http://www.cellport.jp/english/cal/