High or low profile implant? Some sagging and very little breast tissue. (Photos)

From your pictures, you look to be a good candidate for breast augmentation. Based on your pictures and desired results, I would recommend that you look at a medium profile implant. A high profile might give you too much upper pole roundness and a low profile implant of sufficient volume will probably be too wide for your chest dimensions. Obviously, you would need an in person consultation to establish your measurements to determine the best choice. In addition, to profile, You should also look at the different options for implant gel thickness. You may want to consider a more cohesive or thicker gel to decrease the chance of implant palpability and wrinkling since you are so thin.

Questions regarding which size, shape, and type of implants to use are best answered in consultation with a board-certified plastic surgeon who can examine you in person, listen to what you area trying to accomplish, and then review your options with you.  While you describe yourself as "sagging," it does not appear from your picture that you are sagging enough to warrant a breast lift procedure.  I believe that you can get a nice result from implants alone.  I think a moderate plus implant placed under the muscle would give you a very nice result, again, based on your picture.  As to what volume to use, that is where I would need to see you in person.  Pictures are nice and helpful, but never as good as an in-person consultation.

Hello and thank you for your question. You are a great candidate
for a breast augmentation.  The size, profile, and shape of the
implant is based on your desired breast size/shape, your chest wall
measurements, and soft tissue quality.  This decision should
be based on a detailed discussion with equal input from both you
and your surgeon.  This entire surgery
can be performed with a small incision technique.  Make sure you
specifically look at before and after pictures of real patients who have
had this surgery performed by your surgeon and evaluate their results.   The most important aspect is to find a
surgeon you are comfortable with. I recommend that you seek consultation with a
qualified board-certified plastic surgeon who can evaluate you in person.
Best wishes and good luck.
Richard G. Reish, M.D.
Harvard-trained plastic surgeon