If you are looking for a lens shape different than what's shown on the product page, then here you can see all lens shapes available. If you like a certain lens shape, then please type its name in the 'Lens Shape-Size' box in your frame order page. Sarah Palin's lens shape is SP and Stephen Colbert's lens shape is GN. Please also include your preferred lens size. The numbers shown refer to the most common lens sizes (width in millimeters). These sizes are customizable. If you are still not sure, don't worry, we review every order to make sure your choices are the best possible match for your prescription.