A grey turtleneck and navy chinos are bona fide menswear staples if you're planning a casual closet that holds to the highest sartorial standards. Breathe an added dose of style into this look by sporting a pair of double monks. If it's one of those gloomy autumn days, what better to cheer it up than a stylish getup like this one? When it comes to fashion tips for teenage boys, this combo is ideal.