As breasts are composed of mammary and fatty tissues, it is normal for breasts to become smaller after weight loss due to the decrease in body fat content. If you want to make your breasts bigger again, on the one hand, you can promote the blood circulation of the mammary gland tissues through local breast massage, stimulate their development and proliferation, so as to achieve the purpose of breast enlargement. On the other hand, you can adjust your diet to a high protein, low fat diet, such as seafood and tomatoes, and avoid eating too much fried and spicy food. In addition, if the breasts are too small to affect the daily aesthetic, you can consider surgical treatment, the common surgical methods mainly include autologous fat transplantation and breast implant placement. All in all, when you want to enlarge your breasts, you should go to the breast surgery department or general surgery department of a regular hospital, and under the guidance of a professional doctor, choose the treatment method reasonably, and avoid blindly believing in folk remedies and abusing high hormone-containing medicines, so as to avoid losing more than you gain.