Consider teaming a white v-neck t-shirt with navy jeans for an everyday ensemble that's full of style and character. Kick up this whole look by rounding off with brown leather casual boots. During the winter season, when warmth is paramount, it can be easy to settle for a less-than-stylish look. However, this look is a practical illustration that you totally can stay comfortable and remain equally stylish during the winter season. If you frequently wonder how to dress as a 20-year-old guy, this ensemble is a real lifesaver.