So as you can see, looking effortlessly sleek doesn't require that much effort. Just opt for a grey plaid suit and a dark brown long sleeve t-shirt and you'll look incredibly stylish. A pair of tobacco leather oxford shoes easily kicks up the wow factor of any ensemble. As this look shows, you can't think of a better idea for warm weather. A wonderful example for anyone who's still working out how to dress maturely as a young gent.