Round: To make the face appear thinner and longer try angular narrow frames to lengthen the face, a clear bridge that widens the eyes and frames that are wider than deep, such as rectangular in shape.
Oval: The ideal face shape… to keep the oval natural look choose a frame that is as wide or wider than the broadest part of the fact, walnut shaped frames that are not too deep or too narrow.
Oblong: To make the face appear shorter and more balanced, try a frame that has top to bottom depth with contrasting temples that add width to the face or a low bridge to shorten the length of the face.
Diamond: The rarest face shape. To highlight the eyes and bring out the cheek bones, try frames that have detailing or distinctive brow lines, or try rimless, oval or cat eye shapes.
Square: To make the face look longer and soften the angles, try narrow frames, frames that have more width than depth and narrow ovals.