While it is theoretically possible to reduce the size of the breasts dramatically, two sets of problems arise when you change their size to this extent.  The first has to do with risks of poor healing, including loss of the blood supply to the nipple, or loss of sensation to the nipple.  The second has to do with the final cosmetic appearance-- the more breast tissue is removed, the less the surgeon has to work with to create an aesthetically pleasing shape to the breasts.

In general, I have found that most patients are willing to accept a slightly larger cup size (perhaps a full C) if this means a better overall shape and look to the breasts with an operation that poses less risk of complications.  Discuss these options with your surgeon in detail so that you can make the best informed decision.

Good luck!
 

Dr. Salemy