This combination of a grey suit and a white dress shirt is a real lifesaver when you need to look like a modern gent. To give your overall outfit a more relaxed twist, introduce burgundy leather derby shoes to this look. Come warm summer days you're looking for an outfit to keep you fresh and on-trend –– this ensemble is just the right one. If you often wonder how to dress as a 20-something guy, this combo is a safe bet.