For a cool and relaxed outfit, wear a beige short sleeve shirt with a crew-neck t-shirt — these two pieces go beautifully together. A pair of charcoal athletic shoes adds a little edge to your outfit. So if it's a boiling hot summer day and you want to look sharp without putting in too much work, this ensemble will do the job in next to no time. If you're often not sure how to dress as a teen, this pairing is a great example.