It's rare that a piece of clothing can be both laid back and dignified, but the shawl collar cardigan is just that. Perhaps that's why it remains a seasonal staple year after year. Whether you're pairing it with a T-shirt and jeans or a shirt and tie with flannel trousers, the shawl collar is the best of both worlds—it feels like you're wearing an old sweatshirt, but you instantly look put-together.