If you're a fan of relaxed dressing when it comes to your personal style, you'll love this bold casual combo of a white crew-neck t-shirt and black skinny jeans. Complement your getup with tan suede chelsea boots to instantly step up the fashion factor of any outfit. You totally can look cool and fresh under the crazy heat, and this ensemble is a vivid example of just that If you're not sure how to dress as a guy in his twenties, this combination is a great illustration.