Extremely stylish and practical, this casual combo of a white long sleeve t-shirt and khaki chinos will provide you with a multitude of styling opportunities. For something more on the daring side to complement this look, add a pair of beige canvas high top sneakers to the equation. On not so cold days, you can rock a version of this summer-to-autumn outfit and look absolutely awesome. A good, less conservative combination for 30-year-old gentlemen.