This classic and casual pairing of a sweater vest and a navy and white long sleeve shirt is very easy to pull together in no time flat, helping you look stylish and ready for anything without spending too much time combing through your wardrobe. To give your overall outfit a more relaxed aesthetic, why not complement this outfit with black and white athletic shoes? As the temperatures lower, you'll find that a look like this is perfect for this time. Wear this combination to achieve a more mature look as a teenager.