Get a stark contrast against a rectangular face-shape by choosing round shape sunglasses. Round sunglasses pull out the cheekbones giving great definition to the face and make for a real fashion statement, especially with the oversized varieties. Choose round sunglasses to soften the face too.John Lennon immortalised the style, today the haute designers bring this trend to their collections. And it’s perhaps this variety that makes the round sunglasses such a hit. The symmetry makes it a great canvas for a range of patterns.