As you can see, looking on-trend doesn't require that much effort. Just reach for a brown trenchcoat and a beige turtleneck and be sure you'll look incredibly stylish. Puzzled as to how to complement this look? Wear black velvet loafers to boost the wow factor. So when summer is fading away and fall is here, you'll find this outfit to be your everything. This getup is probably what you've been looking for as a 20-year-old man.