Along with implant placement or breast lift, breast ptosis or atrophy can also be corrected using autologous fat transfer to fill lost tissue. It is particularly effective for mild to moderate breast ptosis because the problem is usually the loss of fat in the upper breasts. If patients are not interested in using implants to support their breasts, then the injection of autologous fat in the hollow parts of the upper breasts is the only way to fix the problem. Fat transfer not only locally adjusts the ptotic breast shape but also restores the firmness and elasticity of atrophic mammary glands and the skin. The injection amount must be carefully considered when using autologous fat in these cases because over-injection can potentially lead to breast burden that may have reverse effects of accelerating ptosis in the future. Based on Dr. Chuang’s experience, this surgery is ideal for patients with a breast size larger than B or C cup and for those who have mild breast ptosis or atrophy who can achieve 70%–80% correction. It is not recommended for patients with severe breast atrophy who have sagging skin or even dropping nipples.