Recommended Cup Size for my Frame? AA to Small C Cup

Breast implants have many variables: projection, base width, volume, etc. There are lots of different "naturals" based on perception. We use implant sizers, which are gel implants with different volumes so you can see what 200 versus 400 cc looks like. It's not great to see the difference of 25cc (which is nominal anyways), but it's good for broad strokes. Many surgeons' offices offer this so you can "see" what your results will look like in clothes.
That being said, to answer your question, given your height and weight, I'd recommend 275-350cc. It will also be important to choose an implant with the appropriate base width so you don't have a big gap between your breasts.
Hope this helps,
Dr. Kaufman

Breast Implant Size is a combination of subjective and objective criteria.There is not a direct correlation between the cc's of a breast implant and the corresponding cup size, as cup size is an inexact measurement that varies considerably among companies and even within the same company. Online consultants will not be able to guide you as well as surgeons who perform in person consultation.The size of the implants are based on a combination of a patient's goals and objectives and her anatomy. In order to provide a natural looking augmentation, the surgeon needs to evaluate many factors including soft tissue coverage, skin laxity, chest wall width, breast imprint width, the shape of the breasts and relative level of constriction to ensure that the breast implants are appropriate for your body.Consult in person with 3 experienced and expert board certified plastic surgeons to understand your options.

Narrow framed women run a high chance of implant malposition if too large an implant is placed.  In order to make an accurate size recommendation, I would need to assess your chest wall and breast mound measurements and characteristics.  Unfortunately, there is not a general rule of thumb or objective criteria to implant selection.

Your plastic surgeon will perform several measurements of your chest wall and breast anatomy and determine a range of implants that both fit your chest wall and reach your desired goals.
The next step is to try on this range of implants in the office with your doctor.   The key to this success is showing your surgeon the body proportion you desire with a bra sizer and allowing your surgeon to guide you to the right implant.   It will be much easier to communicate in implant cc's than cup size when determining the appropriate implant for you.
I wish you a safe recovery and fantastic result.
Dr. Gill

I spend alot of time with patients during consultation to go understand their expectations, take a medical history, and of course perform an examination. We go over volumes and shapes of implant based upon all of the above. Spend the time with you doctor to be comfortable with your choice.

Hello,
How large you can go will depend upon what you consider as looking "natural." Believe it or not, this varies.
I would review images in your surgeon's "Before & After" book of women with your type of frame and post-operative look to guide your surgeon. With really thin patients, this can help makes things objective.
It is really a shape you are looking for more than a cup size, right?