Sunglasses need to be the right shape and size to look as good on our faces as they look on display in the optical shop, and of course there are some tips to select the perfect ones for our faces.  The first thing to do is to determine your face shape, because there are several different types of faces. 

Here are the seven primary face shapes and the type of eyeglass frames that look best on each shape:

An oval face shape is considered to be ideal because of its balanced proportions. To maintain the natural balance of an oval face shape, look for eyeglass frames that are as wide as the broadest part of the face.

A heart-shaped face has a wide top third and a narrow bottom third, and to reduce the apparent width of the top of the face, choose frame shapes that are wider at the bottom. 

An oblong face shape is longer than it is wide and has a long, straight cheek line. To make an oblong face appear shorter and more balanced, try frames that have more depth than width.

A square face shape has a strong jaw and a broad forehead, and the width and length of the face have roughly the same proportions. To make a square face look longer and soften its angles, try narrow frame styles, frames that have more width than depth, and narrow ovals.

Diamond face shapes are narrow at the forehead and jawline, and have broad cheekbones that may be high and dramatic. This is the rarest face shape.

To highlight the eyes and soften the cheekbones, try frames that have detailing or distinctive brow lines. 

A round face shape has curved lines with the width and length in the same proportions and no angles. To make a round face appear thinner and longer, try angular narrow eyeglass frames to lengthen the face.

A base-down triangular face shape has a narrow forehead and widens at the cheek and chin areas. To add width and emphasize the narrow upper third of the face, try frames that are heavily accented with color and detailing on the top half (brow) of the frame.