Where would I fall in cup size if I exchange from 330cc saline to 550cc gummy bear moderate profile implants?

You will go up at least one cup size larger, and perhaps a little more. Just adding volume will not correct sagging unless it is very mild. Going larger will be heavy or your neck and shoulders and increase the risk of sagging even more. The 550 cc implants are large and heavy.

At size 36, each 200 cc of implant corresponds to 1 cup size change. You would go up 1 cup size from a 36 D to a DD. Since you say you lack upper pole fullness, I recommend a breast lift using The Bellesoma Method. This will reshape your breast tissue creating upper pole fullness without implants, elevate them higher on the chest wall and more medial to increase your cleavage. Vertical scars are avoided, nipple sensation (in 95%) and the ability to breast feed are maintained if not injured during your previous surgery. Later, fat transfers or small implants can be placed if additional volume is desired.

Best Wishes,

Gary Horndeski, M.D.

Dear delicaterose22,
breast implant type and sizing selection is a complicated process and requires a detailed consultation that includes a discussion of your goals, a detailed examination, and a lengthy discussion. But the decision will always start and end with the patient. When it comes to sizing, we have all of our patients find 3 photos of their desired breast size. We ask for naked breast photos because clothing can obscure the true size (push up bras). Next, we consult with patients and go over the photos and take detailed breast measurements during a physical exam. Next, we using a sizing algorithm to determine a range of implants that will work based on the exam and the measurements.Lastly, during the operation, we use silicone sizers in the operating room to see how the size actually looks in the breast. We sit the patient up in the operating room, while asleep of course, and compare the sizer result with their desired look photos. If it is too small, we start the process over with a slightly larger implant. We don't stop until we get the perfect match.Of all of my breast augmentation patients, every one of them has been happy with their size due to this detailed and meticulous process. You don't want to invest time and money into a result that is either too big or too small.You should discuss your concerns with a board-certified plastic surgeon and make sure that your surgeon understands your goals.
Daniel Barrett, MD
Certified, American Board of Plastic Surgery
Member, American Society of Plastic Surgery
Member, American Society of Aesthetic Plastic Surgery