If you're looking for a laid-back yet seriously stylish outfit, try pairing a brown plaid long sleeve shirt with tobacco chinos. You could perhaps get a bit experimental on the shoe front and complete your ensemble with a pair of dark brown suede casual boots. When temps are falling and autumn is in full swing, you'll appreciate how great this ensemble is for summer-to-fall weather. An outfit like this can make any 20-something guy look better than everyone else in the room.