Square-shaped faces have wide, angular features for which round sunglasses are particularly suitable. Rather than simply imitating your features, they will provide a stylish, balanced look.
If you have a round-shaped face, that means your face has soft features with genuine symmetry as well as a wide curved jawline and a broad forehead. To compliment this, it’s best to go with sunglasses with an angular style that will contrast with your rounded features. This means that both rectangular and square glasses will suit you perfectly.
Diamond-shaped faces are characterized by high, strong cheekbones and narrow, pointed chins, with a group of striking angles at both the chin and hairline. Round glasses are the finest fit for this shape of face, with their softening angular lines, but the right pair of square and rectangular glasses will suit diamond-shaped faces too.