The shape and size of the breasts always change both before and after breastfeeding. While the breast tissue and milk-producing glands will enlarge and become fuller in preparation for breastfeeding, after breastfeeding, they will shrink back to their previous size, making the breasts softer and less full. Therefore, the cause of sagging breasts after giving birth as well as how to firm the bust after giving birth are things that women are interested in to take care of themselves.