If you have a diamond-shaped face, look for glasses that are wider than they are tall, like rectangle glasses, cat-eye glasses and aviator glasses. This will help to balance out your face shape and make your features appear more proportional.
Also, choose frames that are decorated or have interesting details. This will help to draw attention to your eyes and away from your cheekbones.
Besides, opt for glasses in lighter colors or materials because darker frames can make your face look even narrower.