Two things happen and seem paradoxical. As as the swelling goes down there will be some shrinkage but at the same time as the muscle relaxes your breast projection grows. In general the breast shape and size proportionality improves..Breast implants initially after surgery when placed in a submuscular position often give superior fullness that corrects itself with time, the "fluff and drop" phenomena. In reality the pectoralis major muscle takes a while to adjust its size to accommodate the implant as well as occasional muscle spasm which keeps the implant projection higher than its final resting shape. Additional variables include:laxity of skin, size difference during prior pregnancies, position of implant,size of muscle, and size of implant.As the muscle relaxes the projection of the implant often increases and the breast shape improves. Massage and use of a superior placed elastic strap can often make this process go faster.