It's good you are thinking about this BEFORE your final implants are in! I see a lot of revision patients that "leave it up to the doctor", or try to specify a cup size, and end up disappointed. Here's some clues to find your final cc's: - What was your size, in grams, at the mastectomy? Look up your mastectomy pathology size. It's on your report. The weight in grams is very close to how big it is in cc. - How much fluid is in your tissue expander? The tissue expander looks weird, but if it looks way too big, then your final breasts will be too big. The tissue expander should be expanded to a little more than the final implant size, for smooth round silicones; they should be very close to the final implant size for the new 410 cohesive gels. - Don't go by number alone. A 5'2" patient weighing 100 pounds would look bad with 800cc implants. But a 5'9" 200 lb patient may look perfect with an 800cc. Personally, I find I tend to use smaller implants (no more than 600cc) and make up more volume with fat grafting if I need it.