A navy raincoat and a white long sleeve shirt? It's an easy-to-style getup that any guy can rock on a day-to-day basis. You know how to lift up this getup: black leather chelsea boots. So so as you can see, it's a seriously stylish, not to mention season-appropriate, ensemble to keep in your seasonal wardrobe. Definitely a nice option if we're talking outfit ideas for 20-year-olds.