If you're looking for a laid-back and at the same time dapper outfit, rock a white crew-neck t-shirt with dark green chinos. Complete this ensemble with a pair of black suede desert boots to instantly spice up the outfit. Dressing smartly is the trick to surviving uncomfortably cold temps, but this outfit proves that you can do it with style. This combo illustrates that in your 30s you have a vast array of style options.