Thank you for your question regarding what to do with your breasts after four years of breastfeeding. You will get suboptimal results if you do not want the scars from a breast lift. I assume you do not want the scars and are willing to settle for suboptimal results. I would suggest breast augmentation. It is possible that the augmentation gives you the fullness you want and a partial breast lift; however, my opinion is that your best results would be with a breast implant to be simultaneously performed with a breast lift. Therefore if you don't want the scars from a breast lift, proceed with the breast augmentation and see what your results look like. I hope this helps answer your question regarding what to do with your breasts and not wanting breast lift scars. If you have any more questions regarding the breast lift or mastopexy, capsular contracture, or breast implants in general, please contact my office. Since your breast surgery is somewhat complex for an average plastic surgeon, please seek an experienced, board certified plastic surgeon with significant experience performing these types of breast lifts. Do your research. Make sure your chosen plastic surgeon has performed at least 100 breast lifts. Make sure they have the before and after pictures to prove it. Carefully examine their before and after pictures and check their reviews on RealSelf. Good luck! Sincerely, Dr. Katzen. (“Verified” Plastic Surgeon, President of the American Society of Bariatric Plastic Surgeons, Certified by the American Board of Plastic Surgery, Fellow of the International Society of Aesthetic Plastic Surgery, American College of Surgery, International College of Surgery, and American Board of Metabolic and Bariatric Surgery, and member of the American Society of Plastic Surgery, American Academy of Cosmetic Surgery and RealSelf Hall of Fame.)