Unfortunately, without an examination, it is impossible to give you a definitive answer. However, as most surgeons have mentioned, the largest size implant for your body is determined by the combination of your breast width, height AND the amount of breast and skin elasticity (how much the skin can stretch). The implant has to fit within these parameters, otherwise the result will be unnatural. Within these parameters, there is a range of implant volume which can fit your body. My recommendation, if you have very thin skin, is to consider silicone implant and the smaller of the sizes considered. I also recommend trying these implants with a bra in front of the mirror. It is more important to find a volume which is proportional to your body, rather than focusing on a cup size.