Consider pairing a navy denim shirt with beige dress pants if you're aiming for a neat, sharp outfit. Got bored with this look? Invite white leather low top sneakers to shake things up. You know when it's super hot outside, sometimes only a light and breezy outfit like this one can get you through the day. So if you're looking for a modern and age-appropriate outfit for a man in his twenties, this just might be it.