For a look that's super simple but can be dressed up or down in a great deal of different ways, pair a brown plaid overcoat with a blue denim shirt. Brown suede chelsea boots will effortlessly dress up even the simplest of getups. As you can see here, it's super easy to look seriously stylish and stay snug when chillier weather arrives, all thanks to combinations like this one. Seriously stylish, this ensemble will also help any 20-something gent look more mature.