Wear a green long sleeve shirt and khaki chinos for both on-trend and easy-to-create look. And if you wish to instantly ramp up your ensemble with a pair of shoes, throw a pair of grey suede oxford shoes into the mix. As you know, the key to getting through the hottest time of year is sporting fresh combinations like this one. If you want people to see maturity in you as a 20-something, an ensemble like this is a safe bet.