“Just like finding the best romantic match, picking the perfect pair of sunglasses follows the same rule of thumb 'Opposites Attract',” says eyewear expert Blake Kuwahara, owner of Focus Group West eyewear consultancy in Los Angeles. Here, he and other eyewear experts offer advice for common face shapes.

Round face

In order to play down the fullness of a round face, select frames that have straight or angular lines. Rectangles are a safe and fashionable bet. Deep colors like black and tortoise shell can also help to visually balance your face.

Square face

Complement a square face with frames that are more oval or round. The Jackie O style or an aviator shape are good picks. Make sure that the top of the frame sits high enough on the face to downplay the jaw line.

Triangular face

This shaped face is defined by a broad forehead and a narrow mouth and chin. Frames with a thin rim and vertical lines will help balance the bottom portion of the face. Frames shouldn't sit too high on the face; otherwise, they'll accentuate the forehead.

Oval face

If you fit into this group, you're lucky because almost any shape looks good on you. Just make sure that the size of the frame is in proportion to your face.

Heart-shaped face

Sunglasses that are too wide can make chins look pointy if you have a heart-shaped face. The Sunglasses Shop Web site suggests aviator frames.

Small face

Small faces can still pull off oversized sunglasses but should steer clear of thick frames, according to The Sunglasses Shop website.

Long face

Long faces work best with rectangular frames, which add width and help balance out the face's length, the site recommends. Sunglasses with a low bridge may help shorten the length of your nose.