Effortlessly blurring the line between sharp and relaxed, this pairing of a grey crew-neck t-shirt and dark brown chinos will likely become your go-to. Finishing off with dark brown leather loafers is an effortless way to add some extra zing to this look. As you're progressing through your teens, you probably want to start dressing more like a grown-up. If that's the case, combos like this are a fail-safe option.