This look clearly illustrates it is totally worth investing in such smart menswear pieces as a white shirt and dark green pants. Finishing off with a pair of black leather chelsea boots is a simple way to infuse a hint of elegance into this ensemble. So if you're hunting for an outfit that's seriously stylish but also entirely season-appropriate, you found it. Classy outfits for stylish gentlemen in their 20s aren't actually that hard.