It is performed in order to gain volume for breasts that become disproportionate to the body or smaller due to age, postpartum, developmental reasons, sudden weight gain and loss. It includes using breast implants or fat transfer. While determining the implant to be used to enlarge the breast, the breast structure of the patient, the shape of the rib cage, weight and body proportions are taken into account. A rounder breast shape can be achieved or can improve natural breast size asymmetry.