This combination of a trenchcoat and a long sleeve shirt is on the line between classic and laid-back. Got bored with this outfit? Enter a pair of black leather double monks to mix things up a bit. So so as you can see, it's a seriously stylish, not to mention spring-friendly, getup to have in your seasonal rotation. So if you're looking for outfit ideas on what to wear in your early 20s, this ensemble is an amazing example.