The shape of your sunglasses can totally change your look. And a good pair of shades is an instant outfit maker. If you want to go back to basics, introduce a retro style to your collection with a round pair. The shape instantly infuses any ensemble with a playful, laid-back touch and completes your look—so excess makeup need not apply! Go au natural à la the Tory Burch runway (above, left) or swipe on a punchy, orange lip as shown on the Rag & Bone catwalk (above, right). And because the frame is so strong and shapely, you can leave your hair a bit undone—the simpler, the better. Now that you know how to make the shades work for you, click to shop our favorite styles!