Fashion Forms silicone enhancers. Silicone enhancers that are designed to create a more feminine shape by increasing the cup by one-half to two full cup sizes. Safe, comfortable and natural looking. Similar in structure to actual breast implants. Adapts to your breast shape. The natural appearance of Enhancerâ„¢ looks good even under sheer clothing. Durable and water proof. The ultimate alternative for a perfect bustline. Style #8403