When breasts get smaller after quitting breastfeeding, they usually don’t go back to what they were before. Many women experience breast enlargement during breastfeeding. On the one hand, this is because the accumulation of milk in the body will lead to an increase in the size of the breasts; on the other hand, this is because the stimulation of the breasts under the influence of estrogen and progesterone will also lead to the proliferation of breast tissue. After quitting breastfeeding, estrogen levels return to normal and there is no accumulation of milk in the breasts, resulting in smaller breasts compared to the breastfeeding period. If a woman’s breasts become smaller after quitting breastfeeding, although she can’t go back to her old self, she can promote her recovery by insisting on exercises such as breast enlargement, or make her breasts bigger by means of breast augmentation with fat or breast implants.