Try pairing a charcoal crew-neck t-shirt with grey dress pants and get ready to be recognized as a connoisseur of modern men's fashion. Not sure how to round off? Add a pair of high top sneakers to this outfit to shake things up. Stick with this one if you're looking for a solid summery outfit. Think it's hard for 20-year-old gentlemen to perfect smart dressing? This combination is indisputable proof of otherwise.