Dear Evan, Front and side view pictures would have been very helpful. In my 28 years of plastic surgery practice, I have noticed that many women over estimate their breasts size, mainly because 'Victoria secrets' makes the bra size smaller , so women feel better about their breasts size. I have seenhtt women who wore C cup bra, but, by my measurements were only A cup or even small A cup. So, you can see, how impossible it is to recommend you implants size without examining you or at least seeing your pictures. Having said all that , the most popular size in my practice is full C cup. So , let's assume that you are 32 A, to become 32 full C cup , you will need implants with volume of , roughly, 325 cc. If you are 32 small A cup - 375 cc. As far as gaining weight , yes, it will increase your breasts size, but it is unpredictable. Always, consult with experienced board certified plastic surgeons who operate in accredited surgery center for your safety. Check the before and after pictures in the photo gallery, to make sure that they are numerous, consistent and attractive. Pay special attention to the cleavage area, the perkiness, the symmetry and the natural look. Best of luck, Dr Widder