Is 360cc Big Enough to Go From a AA to a D Cup?

In my experience, 360cc will not give you a D cup with the way you are built and how much breast tissue you have.  Once things settle down you may be disappointd with your final result.  Make sure to discuss this with your surgeon prior to your procedure.

Even with your good description you failed to post photos so very veryu hard to advise. My guess is no but not sure. Seek in person evaluations from boarded PSs in your area. 

I know there are other colleagues who use different "rules of thumb," but in over 25 years of experience and several thousand breast cases, I can attest to the accuracy of about 250cc = 1 cup size. You should also have silicone, as you are tall, thin, and have very little of your own breast tissue to cover and conceal implant rippling. Later exchange is possible, but significantly more expensive.

360cc implants will add about 1 1/2 cup sizes to your present size. As I estimate this, you would end up a small to average C at most, but cup size and brassiere manufacturer differences vary significantly. I know you don't want to be "too big;" I hear that daily in my practice. I also hear all too frequently: "I should have gone bigger." Since I charge no surgeon's fee for re-operations (patients pay for OR, anesthesia, and new implants), both my patient and I LOSE when the size isn't right, so I have learned how to get it right most of the time!

I will make this bold prediction: if you use 360cc saline implants you will absolutely require re-operation for not one, but two reasons, and that assumes there are no other issues and totally uncomplicated recovery! You will be too small by a terribly disappointing degree, and even if you wait for re-operation (as you should be told), you will come to learn that implant rippling is a real problem for a woman with your physique. Both of these mistakes are preventable by proper choices NOW!

Is your surgeon an American Board of Plastic Surgery-certified plastic surgeon? "Board certification" by bogus boards, or real boards that have nothing to do with plastic surgery are touted as the "real deal" but are used to imply something other than the truth. Even if your PS is an ABPS-certified plastic surgeon, his advice to you strikes me as not only a "little off" but way off the mark to achieve your goals.

This is a big deal. Reschedule surgery if you must, but do more research and see another plastic surgeon or two to get additional advice. Read my articles (on the "About" tab of my Profile page on this site) titled: "What is the Right Breast Implant Size for You?" and "Why Board Certification is Critical When Choosing a Plastic Surgeon" in addition to the link below; this information will help you ask your surgeon consultants the right questions! Best wishes and good luck!