Is it possible to get implants to increase from AA to A?

   This is possible, and, depending upon chest wall size and current breast tissue, may require 150 to 200 cc.

Of course, you would first have to make a consultation with a board certified plastic surgeon. After taking your measurements, if a small change is what you are a seeking, there are a few options for you. Choosing a small implant under the mucsle would be a nice permanent change and I would most likely recommend a silicone implant. The reason for this is that silicone has a more natural feel than saline and if you have very little breast tissue to beging with, you will feel more of the the implant after surgery.  Fat grafting is really not an option for primary breast augmentation at this time as it is not FDA approved for this purpose and long term outcomes and malignancy detection have not been studied enough. Good luck with your decision!

Yes, it is certainly possible to have conservatively sized implants.I would recommend that you try implant sizes in a bra to see what it would look like in you. I also like to use 3D imaging to visualize what the implant size would look like in actual 3D photos of you.In this way, you can feel confident with your chosen size.

Yes it is possible to insert smaller sizes of breast implants.  If you are over the age of 22, you may want to consider gel implants which have a more natural appearance as well as feel .  You can visit a board certified plastic surgeon and try on different sizes to see which you will be most comfortable with.  You can also do an at home rice test to try different sizes. 

Yes, using small implants would be the easiest. Cup size cannot be guaranteed, but when you schedule an appointment, relay your wishes to the surgeon and see if you can try on 200cc implants to see how they look.

Good luck.