Breast augmentation increases the cup size of the breasts. This surgery is one of the most common cosmetic surgery procedures performed. The breast shaped implants have a silicone shell and are filled with a silicone gel or saline. A pocket for the implant is made under the breast and may additionally be made under the chest muscle as shown in the diagram. The incision is most commonly concealed in the crease below the breast. Implant sizes are noted in cc volume. For reference a teaspoon is 5 cc. Compare the photo albums which show different size ranges.