Many women have breasts that have gotten saggy and lost volume too. This typically happens after pregnancy. For these women, the sagging may be treated with a lift, and the breasts are simultaneously enlarged with implants: a breast lift and augmentation. Plastic surgeons call this operation "augmentation/mastopexy."
Women need to know that a breast lift alone will not give them more fullness in the upper poles. You'd think that the plastic surgeon could simply push the existing breast tissue up, filling out the upper poles, but, in reality, this does not work, despite the efforts of many plastic surgeons over the years to achieve it. Breast tissue is simply too malleable.
Sometimes women say, "I'm satisfied with my size, I just want a lift." They need to know that, if a breast lift is done properly, and extra breast tissue is removed from the lower pole along with skin, their breast size will actually decrease, and there will be no net gain in the upper poles. That is why implants are recommended, even if they are small ones. It is much more common for me to perform augmentation/mastopexies than mastopexies alone.