When the situation calls for an effortlessly sleek outfit, pair a v-neck sweater with a dress shirt. You could perhaps get a little creative on the shoe front and complement your ensemble with white canvas low top sneakers. So if it's a boiling hot day and you want to look on-trend without putting too much effort, this look will do the job in seconds time. A vivid example for any man who's figuring out how to dress as a guy in his twenties.