Wear sunglasses this winter like Gigi

Winter is on its way, and model Gigi Hadid has proven herself as the trendsetter to watch this cold season. But her stylish winter wear is hardly run-of-the-mill. Hadid's accessory du jour? Sunglasses. Recently, Hadid has donned a variety of shades, from oversize aviators to John Lennon-worthy circles. What makes all of these spectacles work...