You should consider a number of factors when you want to pick out a pair of sunglasses that will complement your look. One of the most important aspects is the shape of your face. Generally divided into six main categories— round, oval, square, rectangular, diamond, and heart—your particular face shape should inform your choice of sunglasses. Rectangular face shapes, for instance, look great in sunglasses with bold lines and sharp angles that accentuate their features. If your face has a more square shape, you may find that round or oval frames help you achieve a balanced look.