For a casual ensemble, pair a denim shirt with navy skinny jeans — these two pieces go nicely together. A trendy pair of brown suede casual boots is an effortless way to upgrade this outfit. During the winter season, when warmth is imperative, it can be easy to settle for a less-than-stylish ensemble in the name of functionality. However, this ensemble is a stark illustration that you can actually stay toasty and remain equally stylish in the winter season. As you see, in your thirties your dressing options are in no way limited.