Effortlessly blurring the line between sharp and laid-back, this combo of a crew-neck t-shirt and black chinos will easily become your favorite. Want to play it up on the shoe front? Add a pair of dark brown casual boots to the equation. So when summer is done and autumn is taking its place, you may find this outfit your go-to. As you're making it through your teen years, you probably want to start dressing more like a grown-up. That's when ensembles like this come in useful.