For an ensemble that's very simple but can be worn in a variety of different ways, try pairing a crew-neck t-shirt with olive chinos. Finishing with a pair of black derby shoes is an effective way to bring some extra classiness to your getup. Certainly a foolproof choice when it comes to style tips for 20-something gentlemen.
Marrying a crew-neck t-shirt and navy dress pants is a guaranteed way to infuse your wardrobe with some relaxed elegance. Complement your outfit with black derby shoes for an added dose of refinement. If you're 20, take inspiration from combinations like this to take a more adult direction in your style.
For stylish menswear style without the need to sacrifice on functionality, we turn to this combo of a crew-neck t-shirt and black jeans. Amp up the classiness of this look a bit by slipping into black derby shoes. Smart casual getups for stylish young guys aren't actually that hard.