As you can see here, looking seriously stylish doesn't take that much time. Rock a dark green sweater vest with beige chinos and be sure you'll look amazing. Finishing with a pair of black leather chelsea boots is an effective way to breathe an extra dose of sophistication into your look. A great example of transeasonal fashion, this outfit is a must-have come warmer weather. Those who are curious how to look fashionable as you move through your adolescence, you have your answer.