Marrying a suit and a charcoal dress shirt is a surefire way to infuse your wardrobe with some rugged refinement. Hesitant about how to round off? Add black leather double monks to your look for a more casual finish. Super cool and entirely summer-friendly, you can work this look throughout the summertime. So if you're scouting for style ideas on how to dress as you move into your 40s, this ensemble is perfect.