This is irrefutable proof that a suit and a crew-neck sweater look awesome together in an elegant getup for a modern gentleman. Add a pair of brown suede desert boots to the mix to give a sense of stylish effortlessness to your look. This ensemble is a good choice when it comes to a killer ensemble that will take you from summer to fall. Wondering how to nail smart casual outfits as a teenage guy? This combination is a great example.