How big(cup size) is normal for a petite frame? (photo)

Thank you for the question and picture.  There is no "normal" cup size for petite patients. There is also no reliable correlation between specific breast implant size and resulting cup size. Generally speaking, the best online advice I can give to ladies who are considering  breast augmentation surgery (regarding breast implant size/profile selection) is:
1. Concentrate on choosing your plastic surgeon carefully.  Concentrate on appropriate training, certification, and the ability of the plastic surgeon to achieve the results you are looking for. Ask to see lots of examples of his/her work.

2. Have a full discussion and communication regarding your desired goals  with your plastic surgeon. This communication will be critical in determining  breast implant size/type/profile will most likely help achieve your goals. 
In my practice, the use of photographs of “goal” pictures (and breasts that are too big or too small) is very helpful. I have found that the use of words such as  “natural”  or “big C cup”  etc means different things to different people and therefore prove unhelpful.
 Also, as you know, cup size varies depending on him who makes the bra; therefore, discussing desired cup  size may also be inaccurate.
 The use of computer imaging technology may also be very helpful during this communication process.

3.  Once you feel you have communicated your goals clearly,  allow your plastic surgeon to use his/her years of experience/judgment to choose the breast implant size/profile that will best meet your goals.  Again, in my practice, this decision is usually made during surgery.
I hope this and the attached link (dedicated to petite patients) help.

Thanks for the pictures. Trying to achieve a cup size is not the best way to determine implant volumes in my opinion. This needs to be the judgment of the plastic surgeon coupled with the desired results from pictures of the patient. Focus less on cup size and more all final results.

Dear Kim,unfortunately, exact sizing is impossible online. In general, you seem to be very petite and I would recommend undergoing silicone ultra high-profile or full profile implants in the 375 to 400cc range. Please look for a board certified plastic surgeon with expertise in breast augmentation and to undergo Vectra 3-D imaging to simulate breast augmentation with different size implants.  Breast of luck.