A white and navy crew-neck t-shirt and chinos are the kind of a tested casual look that you need when you have no time. Take a dressier approach with footwear and complement this outfit with a pair of dark brown suede loafers. When temps are starting to drop and autumn is in the air, you'll appreciate how great this ensemble is for weird transition weather. As you can see here this ensemble is something you can totally wear as a teenager.