First of all, I would completely agree based on your photographs that you should not need a mastopexy (breast lift) and augmentation alone should be fine for you. When it comes to implant sizing, however, it is hard to determine if a 365 cc implant would be right for you or not from photos alone. Implant selection is based on measurements of your breasts and chest wall as well as on your specific goals regarding cup size and projection. Those are questions that your surgeon can answer. Based on your photos, though, a 365 cc implant doesn't look like it would be out of the question as an appropriate sized implant for your frame.