Would I See a Difference Going from 375 Cc to 500 Cc? (photo)

Hi there-

Because the position of your implants is in such need of correction, I would advise you to first correct the shape, then adjust size if necessary. The shape of the breasts is paramount.

Increasing your current implant #size may cause #sagging. Typically, to increase implant size the #pocket will need to be adjusted and a #breast lift may be necessary; to better #support the weight of the implants. However, it is possible that the #pockets may need to be adjusted. Creating a #Neopectoral #pocket is sometimes used as a technique to provide a stronger more secure placement for breast #implants. In this case, the implant is removed and the capsule is dissected from the muscle to create a new or “neo” pocket for the implant. 
Your implants may need to be re-positioned. It's best to begin by consulting with a board-certified surgeon in-person to learn of that is in fact the case, and, as to which approach and implant #type is most ideal for you.
The best #option for #revising should be discussed during a one-on-one consultation with a board-certified plastic surgeon. Deciding on additional #elective cosmetic #surgery is a personal #choice. Your procedures should always be performed by a #PlasticSurgeon who is board-certified and has a great deal of experience specializing in cosmetic #surgery. 

The increase in volume will make your larger but if done alone would simply make your implants even higher. I agree that the muscle may have not been released in the first surgery and that is contributing to the 'high' implants. Your revision should include a full muscle release and you should consider an anatomic or 'tear drop' implant as your nipple to breast crease is very short. This will help to decrease your upper pole fullness. 

Going with a larger implant may not be the best solution to your problem.  According to the pictures, the placement of the implants look high.  Lowering the breast pocket to have better implants placement may be the best solution. 

The lower pole of your breast did not stretch post augmentation and your implants stayed high. You had  trans axillary augmentation and pectoralis muscle was not released and has pushed your implants too high. If you get bigger implant,the problem will get worse. You need revision and not bigger implants.Please get second opinion.