A light blue denim shirt and navy skinny jeans are among the crucial pieces of a versatile casual closet. To give your ensemble a dressier twist, add a pair of brown leather knee high boots to the equation. During the colder months, when warmth is top priority, it can be easy to settle for a less-than-stylish ensemble. But this ensemble is a bright example that you totally can stay snug and remain equally stylish during the colder months.