Throw a blazer over a sweater and layer the shawl collar over the blazer's lapels. Cotton jacket with removable collar ($238) by Life/After/Denim; cotton shirt ($108) by Saturdays Surf NYC ...

chunky shawl collar cardigans keep you warm without sacrificing style. You can even swap one in for your favorite blazer and rock it with a shirt and tie. Oh, and did we mention they were the go ...