Hello and thank you for the question.
Tissue transfer from one person to another requires immunosuppression. These are medications that mask or diminish the natural response of your body to foreign tissue, much in the same way that your body wards off abnormal cancer cells. Immunosuppression comes with many of its own inherenent risks, including decreasing the body's inherent ability to defent against infection and cancer cells, among other things.
In general, there are much better alternatives to augmenting the breasts than using someone elses tissues. The gold standard being, of course, augmentation mammoplasty with implants. More recently, auto-augmentation with one's own fat has been gaining popularity, although this procedure requires further investigation to assure its safety.
Kindest Regards,
Glenn Vallecillos, M.D., F.A.C.S.