I appreciate your question.
The size of implant is dictated by your chest wall measurements. Once we determine that we can choose the profile based on what you want or need to achieve. If you are seeking a natural look, then the diameter of the implant should be equal to or, more i...
You are wise to question the profiles with a size increase. Evaluating your photos, I believe that a 600 cc mod+ profile will be too wide for you. Right now you have 375 cc mod+, and the base width of those implants just fit your small frame of 119 lbs and 5'2". ...
In general terms - a larger diameter breast implant will raise the apparent top of the breast and reduce the space between the breasts. An in-person exam in crucial to explain these concepts and review your options.