It's really useful to know your face shape because you can then determine the right kind of sunglass style for you! This basically means finding a pair that compliments your face in the best way possible and does your face justice.

Square shaped faces look best with curvier or round framed sunglasses such as oval, cat eye, round, pilot, wrap and butterfly styles.

You want to choose a style that contrasts well against your face for a great balance, which a curvy or round style will achieve. Avoid styles with 'boxy' edges as these will make your face more angular and square-like.

Oval shaped faces look best with rectangular framed sunglasses such as round, cat eye, pilot, oval, rectangle and butterfly styles.

Because most sunglass styles work well with an oval shaped face, there's a lot of choice for a great match! Just make sure you find a style that isn't too wide for your face, in fact, they should be a similar width.

Round shaped faces look best with geometric framed sunglasses such as oval, round, rectangle, wrap and wayfarer styles.

You want to choose a style that will contrast perfectly against your round or curvy face, which means picking a sharp-edged or angular style. Avoid styles with round or circular frames as these will make your face appear more round.

Heart shaped faces look best with flashier framed sunglasses such as round, cat eye, aviators, semi-rimless, pilot and butterfly styles.

For this particular face shape, avoid contrasting your face shape and look for styles that are typically wider towards the top and tapered at the bottom. This will be great for complimenting your heart shaped face.

Diamond shaped faces look best with oval and rimless frames to compliment your typically wide and high cheekbones. Opt for styles that feature gentle curves and make sure they're not wider than your cheekbones!

Avoid any styles that feature sharp edges as these will make your face appear more angular, which is why you should aim to 'soften'.

Long (also called oblong or rectangle) shaped faces look best with oversized styles such as wrap, shield, square, wayfarer and rectangle. Thick frames will add width that your face will typically be lacking.

Avoid styles with small fames and these won't provide enough of a contrast or balance against the length of your face.