I'm 5'5 100lbsis 300cc Too Big? I'm a 32 AA. (photo)

A cup size of bra is considered approximately 200 cc's in an implant.  This is an estimation.  Therefore a 300 cc implant may add 1 1/2 cup sizes.  You are probably an exception to this rule because you are a petite individual.  I do agree with your doctor and would highly recommend silicone, high profile to fit your small diameter of breast.  You cannot judge by bra size but a 300 or 350 cc HP may give you a C cup, since you are so small around the chest (30).  I agree with submuscular placement.  I discourage the use of saline in a small framed person as you.  The implants will more than likely, simulate a ballish look and be firm.  This will give you more of a "fake" look, which most women to not wish to have.  SInce you are so small framed, even with silicone, you may be able to feel the edges of the implant but much less likely with silicone.  I agree with the recommendations of your doctor. 

Good Luck!

 

There are different ways to establish the preferred volume for breast augmentation. Based on the photograph I think that a 300 mL implant would be suitable choice. You need to take time to figure out precisely what size you want to be

At size 32 each 100 cc's of implant corresponds to 1 cup size change.  A 300 cc implant will take you up 3 cup sizes to a C or possibly a D.  However, from your photographs your breasts appear too low.  If you implants are centered under your areola they will extrude underneath the pectoralis major muscle and you will need revisions.  I recommend a new technique called Breast Augmentation with Mini Ultimate Breast Lift.  Using only a circumareola incision it is possible to place the implant, reshape your breast tissue to increase upper pole fullness and elevate your breast higher and more medial to increase your cleavage.  Aligning the areola, breast tisuse and implant over the bony prominence of the chest wall will achieve maximum anterior projection with a minimal size implant.  The profile of the implant is irrelevant when placed subpectorally because the muscle will compress it.  I believe if you place a 300 cc implant through an inframammary incision your implants will bottom out and you will need a revision in a short period of time.

Best Wishes,

Gary Horndeski, M.D.