This pairing of a long sleeve shirt and navy dress pants will add alpha male essence to your outfit. For extra fashion points, add brogues to the equation. In the colder months, when warmth is key, it can be easy to surrender to a less-than-stylish outfit. However, this outfit is a practical illustration that you totally can stay comfortable and remain equally stylish in the colder months. And if we're talking dressing ideas for 20-year-old gentlemen, this outfit is perfect.