This classic and casual pairing of a trenchcoat and a white and black long sleeve shirt can take on different forms according to the way you style it. Tone down the dressiness of your ensemble by slipping into a pair of black leather casual boots. This outfit demonstrates how to kill it in the smart casual style department as a teen.
White and Black Long Sleeve Shirt with Trenchcoat Smart Casual Chill Weather Outfits For Men In Their Teens
This combination of a trenchcoat and a white and black long sleeve shirt looks polished, but in a modern way. You can follow the casual route in the footwear department with a pair of black leather casual boots. This look is probably what you're looking for as a teenage guy.