This off-duty combination of a white and blue gingham long sleeve shirt and grey linen chinos is extremely easy to throw together in no time flat, helping you look on-trend and ready for anything without spending a ton of time digging through your closet. Infuse a dash of stylish nonchalance into this getup by wearing a pair of grey athletic shoes. And if we're talking casual dressing ideas for adolescents, this combo looks nice on most.