Thank you for your questio Please know that it is a common misconception that implant size correlates with the bra cup size. Many patients are often confused regarding that because of reading reviews or hearing about what their friends got. First, bra sizes clearly vary among manufacturers, and they can label the cup size by any designation they choose. So when you say you want a small d-cup, it is not much helpful to us surgeons. But if you have specific measurements, and a specific bra, then the discussion can move forward. Second, there is a confusion over sister sizers which complicates things. For example, a patient wearing a 34C may also fit into a 36B bra. With so many problems, it is no surprise that many patients are dissatisfied with their outcomes. Thus, establishment of an accurate band-size is important, as is recognition that cup sizes are a range and ever changing. Even though you may give importance to cup size designation, what should matter most is that the implant looks good aesthetically and that the chosen bra fits and feels comfortable. This is exactly why patients must have a consultation. I am assuming you have gone to a board-certified plastic surgeon, and I believe they have assisted you in choosing an implant that is more tailored to your breast characteristics. They must have done this because if you want natural looking breasts, the implant has to fit YOUR body dimensions. The more you deviate from the proper fit, the more fake your breasts will look. For this reason, please follow your surgeon’s recommendation regarding implant selection as long as you trust them. Surgeons use what is called tissue-based planning. The planning takes into account the effects of implants on tissues over time, risks of excessive stretch, excessive thinning, visible or palpable implant edges, visible traction rippling, ptosis (Sagging), and breast tissue wasting. To determine the implant size, breast measurements must be made: 1) Base Width of the existing breast tissue, 2) skin stretch, and 3) Nipple-to-Inframammary Fold distance. The combination of these measurements will help determine tissue coverage and the required implant volume to optimally fill the breasts. For example, if your breast base is very wide, we will require a higher implant volume to avoid the “rock in a sock” appearance. If you choose a large implant that exceeds your breast boundaries, or which overly stretches your breasts, or is too round, then it will make your breasts look unnatural. In fact, there is higher likelihood of bottoming out (i.e., an empty upper pole, nipple sitting too high on the breast), double bubble deformity, implant malposition, implant visibility, breast sagging, and breast tissue wasting. So going big is good, but going beyond limits will get you in big trouble…pun intended. Now, if we consider a single bra manufacturer of a single style, then we can say that if you are currently at a B-cup (please note that this is my assumption), the chosen size of 350 cc may get you to a “small” D-cup. I say this because a study by Dr. Bengtson and Dr. Glicksman titled “Standardization of Bra Cup Measurements” has shown that the average implant volume required to increase the cup-size by 1 size is equal to 205 ccs. For 2 full cup sizes, it would be 410 ccs. It is important that you communicate your goals very clearly, but understand that you need to have realistic expectations. If you did not get an opportunity to discuss the fact that you are hoping for a small D-cup, please share that now with your surgeon. A second opinion would be best obtained through an in-person consultation, but I would like to let you know that there is no patient that does not appreciate their surgeon’s advice in the long-term seeing all the negative consequences that can happen in the short term with larger than normal implants. Hope this helps, and best of luck!