If your breasts are small after weaning, you can have them enlarged by breast implant, autologous body, fat breast enlargement, exercise breast enlargement and other methods in order to restore the purpose of breast enlargement. 1. Breast augmentation by implants: Breast augmentation can be achieved by implanting various forms of implants into the mammary glands as well as the posterior space of the pectoralis major muscle. 2. Autologous fat breast augmentation: extracting excess fat from other parts of the body, processing the fat and then injecting it into various layers of the breast can also achieve the purpose of breast augmentation. 3. Exercise breast enlargement: by doing swimming, push-ups, chest expansion and other exercises, you can increase the exercise of the pectoralis major muscle and promote the growth of the pectoralis major muscle, so as to achieve the purpose of breast enlargement. There are other clinical methods of breast enlargement, it is recommended to consult a professional breast surgeon.