Rock a dark green overcoat with a suit for a truly stylish outfit. Black leather work boots will bring a laid-back feel to this ensemble. In the winter season, when warmth is key, it can be easy to settle for a less-than-stylish outfit in the name of functionality. However, this outfit is a good illustration that you can actually stay snug and remain equally stylish during the winter season. This outfit demonstrates how 20-somethings kill in the style department.