Exercises for Tightening Pectoral Muscles After Breast Implants?

Unfortunately there aren't any exercises that lift breasts, whether there are implants or not. It is possible though that using your pectoral muscles will push the implants down over time, which may or may not look better.

Pectoral muscle tightening will not lift breasts. In fact, it is wise to proceed with exercise only with your surgeon's knowledge and approval. Consult with your surgeon as he or she knows the scope of the surgery and the specifics about you.

Oki,
No amount of pectoral muscle development will lift your breasts.  In fact, it might even worsen the sagging appearance.  Let your implants settle a bit longer, about six months, before you decide whether a lift is in order.  Good luck!

Unfortunately, no amount of exercise will lift the breast tissues. This is because the downward drift of the nipple and areola isn't caused by muscle weakness. Rather, it is a tissue laxity and skin excess problem so muscle bulking won't affect this. When you are ready for a lift, have it done by an expert because this is more of an art form that just placing implants in the breast.