350cc or 375cc Mentor Silicone for for Slim/petite/small Woman?

Thank you for the question.

No, generally speaking 25 mL does not make a significant difference;  it will probably not even make a noticeable difference clinically.

 Unfortunately , it is not possible to give you precise advice without direct examination and a full communication of your goals. I think you will be better off spending more time with your plastic surgeon, communicating your goals as precisely as possible. In my practice, I prefer the use of goal pictures, as opposed to discussing bra cup size.

I have found that the use of words such as “natural”  or “C cup size” etc means different things to different people and therefore prove unhelpful.
 Also, as you know, cup size varies depending on who makes the bra; therefore, discussing desired cup  size may also be inaccurate.  You may want to allow your plastic surgeon some “artistic license” to select the  breast implant size/profile that will most likely achieve your goals;  in my practice this decision is often made intraoperatively ( after the use of temporary sizers). 
 

Best wishes.

I would suggest viewing the sizes on yourself using a 3-D imaging machine. In my office, I use a Vectra imager to view patients in my office. It makes a 3-D picture to view different sizes in the patient's own body. I find it very helpful in making patients more comfortable with implant sizes. The images also help to show how little difference there is between two sizes (such as 350 vs 375). The difference between those two implants is a matter of millimeters so don't stress too much over it!