Always go for the opposite. Square faces go well with anything but a square or rectangular pair of glasses. While oval and round glasses look great, an aviator style, wayfarer or cat-eye look great too. Square face shape has a strong horizontal jawline, a square chin, and a broad forehead. It's hip to be square. And it shows in the wide range of eyeglasses available that complement a square-shaped face. Proportions of the face are equal in length and width. Any curved pair of glasses soften the sharpness and make your face appear a little longer. Avoid browline glasses with a square face.