As you can see here, looking casually classic doesn't take that much work. Try pairing a charcoal knit blazer with black chinos and you'll look incredibly stylish. A pair of white leather low top sneakers instantly kicks up the appeal of your ensemble. A killer combo like this one is just what you need come super hot sunny days. Those who wonder how to sport modern casual dressing as you are making it through your teen years, this combination should answer your question.