Diane Keaton [Photo/Getty Images]

Going Round

Round-shaped sunglasses are a key feature of the hippie dress code – how could we forget John Lennon's iconic look? Far from the mood of cat-eye sunglasses, which perfectly embody Hollywood glamour and drama, round frames express intellectualism and a laid-back spirit. If you have a square face, dare to wear lenses as round as goggles; they'll soften your angles. If not, go for a slightly more elongated model and enjoy their quirky retro look. Now you’re part of the circle alongside Diane Keaton, Mahatma Gandhi and Harry Potter.