Defining the shape of your face is the first step in choosing the right frames. The main rule when choosing sunglasses is to look for a balance between the shape of your face and the shape of the frames. Always choose glasses with frames that are opposite to your own shape. In order to work out which face shape you have, you need to find out which parts are long, which ones are short or whether they’re actually all the sameSo grab a flexible tape measure and follow the guidelines below—you'll find it out in no time.
1. Measure your forehead
Pull the tape measure from the peak of one eyebrow arch to the peak of the opposite arch.
2. Measure your cheekbones
Measure across your upper cheeks, starting and ending at the sharp bump below the outer corner of each eye.
3. Measure your jawline
Measure your jaw across your face at its widest point (about an inch down from your ears).
4. Measure your face length
Measure from the center of your hairline to the tip of your chin.
5. Compare your results to the profiles below
Once you’ve got these four measurements, note which is the largest of them all as this will be the giveaway.

Round

round-faces
Cheekbones and face length have a similar measurement. They are larger than forehead and jawline, which also have a similar measurement. The angle of the jaw is soft.

We recommend: Rectangular, square and narrow frames as they’ll give the illusion of a longer face.
Try to avoid: Small, round and oversized frames will make your face appear rounder.

Square

square-faces
All measurements are fairly similar. The angle of the jaw is sharp.

We recommend: Round and oval style frames as they will add length to your face.
Try to avoid: Thin, angular and square frames as they will draw attention to your chin.

Oblong

oblong-faces
Face length is largest. Forehead, cheekbones, and jawline are similar in size.

We recommend: Pilot and square frames, because they will provide your face with the most ideal contrast by making it appear shorter and wider.
Try to avoid: Narrow and rectangular frames will make your face appear longer, so steer clear.

Diamond

diamond-faces
Face length is largest. Then, in descending order: cheekbones, forehead, and smallest is jawline. The chin is pointed.

We recommend: Look for top-heavy styles like semi-rimless, rectangle and oval frames. Upswept frames like the cat-eye will emphasise and soften your cheekbones.
Try to avoid: Narrow frames will draw attention to your narrow eye line.

Triangular

triangular-faces
Large jawline, smaller cheekbones, and smallest forehead. Face can be any length.

We recommend: Frames that are wider on the bottom.
Try to avoid: Frames that are wider on the top.

Oval

oval-faces
Face length is larger than the width of the cheekbones, and forehead is larger than the jawline. The angle of the jaw is rounded.

We recommend: All styles will complement your face perfectly, but mostly try round, rectangle and square frames.
Try to avoid: Frames with a small width can draw attention to a narrow line.

Heart

heart-faces
Forehead measures greater than the cheekbones and jawline. The chin is pointed.

We recommend: Bottom-heavy frames will help add width to the lower face, while rimless frames will let your natural face shape shine.
Try to avoid: Pilot and semi-rimless frames will emphasise the wider part of your face.
Voilá! You've found your face shape!