This combo of a navy overcoat and a crew-neck t-shirt can only be described as ridiculously stylish and effortlessly sleek. Our favorite of a great number of ways to complete this outfit is with black leather casual boots. This ensemble is really an essential if you're looking to stay warm this winter and look equally stylish. So if you're looking for fashion tips on what to wear as you drift through your 20s, this combo is perfect.