For an outfit that's pared-down but can be dressed up or down in plenty of different ways, dress in a dark brown dress shirt and navy chinos. Complete this ensemble with a pair of brown leather oxford shoes to spice things up. Keep this getup in your front hall closet come spring, and we guarantee you'll save a lot of time brainstorming for what to wear on more than one morning. Surely a great pick if we're talking fashion for guys in their 30s.