Pairing a navy and green long sleeve shirt with black dress pants is an on-point pick for a classic and classy look. Introduce derby shoes to the equation and ta-da: the ensemble is complete. As you can see here, it's super easy to look on-trend and stay snug when chillier weather comes, all thanks to looks like this one. If you're not sure how to dress appropriately for your age, this combination comes in handy.