I Currently Have 360cc Saline Implants, I Am Having my BA in 9 Days. My Doctor Recommended 500 or 500c? (photo)

   Going up 140 cc is not an reasonable amount.  I typically recommend going up at least 100 cc so that a difference is perceived by the patient after an upsizing.  Find a plastic surgeon with ELITE credentials who performs hundreds of breast augmentations and breast implant revisions each year.  Then look at the plastic surgeon's website before and after photo galleries to get a sense of who can deliver the results.  Kenneth Hughes, MD Los Angeles, CA

The diameter of your "breast pocket"  (from edge of breast bone to the side of your chest) should match the "base diameter" of your implant of choice.Another consideration in the choice of implant size and type  is how much your skin/breast tissues can be stretched .  Added projection, resp. fullness can be achieved with increasing size to moderate profile or high profile.This all together should give you what we call  a "natural look".

As you can tell I did not mention any particular size or  particular implant as the right "size" is what looks finally the best for you. What you consider "natural" I cannot judge.

Therefore as suggested elsewhere go back to your surgeon and discuss and show him pictures what you "really" want.

The bigger the implants the heavier they are and your tissues have to "hold" the weight for the years to come.

Good luck!

Than I recommend UHP 500 cc silicone implants as a compromise. But you need IN PERSON evaluations! Please. 

You are planning to increase your breast implant size by 140 cc this will be about a 2/3 to 3/4 of a cup size increase.  If this is your goal then you should get a nice final result.  

Your goals and what you prefer is the most important consideration when contemplating revision of your breast augmentation.  Your current implants do sit high with the pointed projection just above the nipple.  Repositioning a fuller implant properly centered in the breast should give you a much improved result.  The degree of fullness is your call so make certain your surgeon clearly understands the right look for you so that he can decide on the correct implant to get you there.