Cat-eye or browline sunglasses that add width at the brow line help balance a diamond face's narrow forehead against its prominent cheekbones.
The Styling Principle
Soften and add visual width at the forehead and jaw to bring them closer to the cheekbone's width, while avoiding extra volume directly at cheekbone height, which is already the face's widest point. Cat-eye or browline sunglasses that add width at the brow line help balance a diamond face's narrow forehead against its prominent cheekbones.
Sizing
As with prescription frames, sunglasses width should roughly match your face's widest measurement — for a diamond face that means sizing relative to cheekbones.