Most breasts are naturally small to medium size. The normal average size for a breast is 32" to 37" for the average woman (about a cup). Most large women are born with larger breasts and tend to get larger breasts naturally. Most breast augmentation surgery involves the removal of excess tissue (the fat) and the placement of implants. About 1 in 6 people experience mastectomy and/or breast reduction. Breast reduction surgery generally involves implants that will be placed on the breasts. The implants are usually placed under the breasts. Breast augmentation surgery usually involves the placement of two or more breast implants. These implants are then placed at the front of the breast to make them look bigger. A small section of the breast is then left, or the implant, as part of the larger breast. The remaining breast tissue is then "cut" off and the new breast grows around it. There are a number of different breast implants that are available, each with their own advantages and disadvantages. The advantages of implants are: They are the most common breast augmentation procedure, and are often the most popular because they are widely used. They are inexpensive. The procedure usually costs less than $500, and you can have them done within a few days.