The best sunglasses styles to help you look years younger - flattering looks for every face shape

Oval face

Those with an oval face can get away with a variety of styles, according to co-founder of Cheyyn Ali Azimi.

He said: "If you have an oval face shape, it means that you have balanced facial proportions with a slightly curved jawline that is narrower than your forehead. While you can pull off almost any style of glasses, here are my top choices."

Sunglasses: Round, oversized frames, aviators, cat-eye and D-frame styles.

Eyeglasses: Rectangle, square and cat-eye frames.

Round face

Ali said: "If you have a round face shape, you have full cheeks, a rounded chin and you have approximately equal facial width and length."

Sunglasses: Square or rectangular frames with sharp edges to add angles.

Eyeglasses: Rectangle, square and narrow frames create a more defined look.

Square face

"If you have a square face shape with a strong jawline, a broad forehead and defined cheekbones, try these glasses."

Sunglasses: Round and oval frames to soften angular features.

Eyeglasses: Round shapes, aviators and cat-eye frames to add softness, curves and balance.

Heart-shaped face

"For a heart-shaped face with a wide forehead, narrow chin and prominent cheekbones, try these shapes," the expert added.

Sunglasses: Aviators, cat-eye frames that mimic the face shape and round frames for balance.

Eyeglasses: Rectangle, cat-eye and geometric frames to balance the forehead and chin.

Diamond face

Ali continued: "People with diamond face shapes have a narrow forehead and chin, and wide cheekbones."

Sunglasses: Cat-eye, oval, rectangular and top-heavy browline frames will balance cheekbones.

Eyeglasses: Oval, rimless and cat-eye frames to soften angular features.

Pear-shape face

"For a pear-shaped (sometimes called a triangle) face shape, with a narrow forehead and a wide jawline, try the following."

Sunglasses: Cat-eye and frames with wider tops to add width to the forehead.

Eyeglasses: Browline, oval and aviator frames balance the jawline.

Rectangular face

"Those with an oblong (rectangle) face shape, who have a long and narrow face, should buy the following," Ali added.

Sunglasses: Taller, oversized styles and geometric frames to add width.

Eyeglasses: Round, oval and frames with decorative details to add width and balance.

This comes as an expert shares more on why glasses are a flattering addition to any outfit.