Silicone Breast Forms have been the breast prosthesis of choice for decades, especially when compared to those that are made of other materials. The main reason for this is the fact that the silicone forms look and feel almost like regular breasts. They can come in regular silicone material or in a lightweight form. Both of these types are molded to fit the tissue perfectly. They can also be made with nipple protrusions to enhance the feel of having real breasts. Silicone forms are available in various shapes. Each shape is made to emulate the drop of normal breasts.