While it is a question that every breast reduction patient asks preoperatively it is a difficult one for a plastic surgeon to answer. Cup size can vary depending on the style or brand of the bra, how you like to wear your bras, and other factors. There really is no way for your surgeon to accurately measure your cup size on the operating table during the procedure to know when the size you asked for has been reached.During a breast reduction operation we always remove what seems to be about the right amount, temporarily close the incisions, sit the patient up, look at the result and remove additional tissue if needed to get well shaped, symmetric breasts. We're doing our best to give you a good shape, a natural appearance, and a breast that looks appropriate to your frame. When I do this I'm also thinking about the conversations I had with the patient prior to surgery regarding her desires and expectations. Some patients make it clear they want pain relief but still want full breasts. Others say things along the lines of "You couldn't POSSIBLY make me too small! I want them REALLY small!". I try to do my best to meet the patients desires.Having said all that, most patients are happy with the result if they get a well-shaped, natural appearing breast that is proportional to their frame. For most, that ends up being a C-cup but can't be guaranteed. Good luck on your operation. I'm sure you'll really feel a difference in your back and neck and love the way you look!