Breast implants (made from silicone) are inserted under the breast – either directly beneath the breast tissue or partially under the muscle underneath the breast.
The implants are inserted via a short incision (usually about 5cm long) which leaves a scar in the skin crease under your breast.
Whilst implants will increase the size of your breasts, remember that the biggest determinant of your outcome is what your breasts looked like before the surgery. For example, if your breasts are naturally widely spaced apart to begin with, they will remain widely-spaced apart. If your nipples point in slightly different directions beforehand, they may look more uneven after your breast enlargement. If you do not have much breast tissue to begin with, you may be able to feel or see the outline of the implant.
In some situations, the breast may also benefit from an uplift to take in excess skin (an augmentation mastopexy).