Full, Round Breast Implants for a Petite Woman?

Your implant size will be based on a number of factors:

1. Your chest measurements. The base diameter of the breast is an important measurement and gives the surgeon information on what will fit properly

2. Your shoulders and Torso appearance. Women with more square shoulders and thinner waists can carry a somewhat larger implant

3. The length of your waist. A longer distance between your breasts and your hips means you can go slightly larger

I allow women to try on the implants during the consultation to give them an idea how the size would look in clothing. This seems to really help in the decision making process

In general I believe thinner more petite women get a better more life like result with a silicone implant since there is less of you covering the implant.

I believe depending on the above points, you could easily look very good and natural with a small C cup size breast after augmentation. Often women wish they had gone bigger a few months after surgery, so if it comes down to a couple of choices, choose the larger of the two. I would also consider a more high profile implant to avoid looking to wide across the chest

The size you are describing sounds about right. In general silicone implants produce more favorable results in very thin patients like your self. Unfortunately, silicone implants are FDA approved for patients 22 years of age and older.
Having said that, saline implants are your only choice, but dont be dissappointed, they are still very nice implants that will provide you with the look you want.
Good luck.