For a casually cool outfit, consider teaming a white crew-neck t-shirt with dark brown chinos — these items work perfectly together. White canvas high top sneakers are the simplest way to infuse a dose of stylish effortlessness into your outfit. This one is an obvious option when it comes to a cool summer-to-fall outfit. Wondering how to perfect casual style as you are making it through your teen years? This combo is the perfect answer.