For an ensemble that's city-style-worthy and casually smart, choose a black blazer and black chinos. For extra style points, add a pair of black leather monks to the equation. As you can see, in your twenties your style options are in no way limited.
Loving the way this combo of a black blazer and black dress pants immediately makes any gent look refined and sharp. A pair of black leather monks is a safe footwear style here that's full of character. Amazingly stylish, this combo is also appropriate for a guy in his twenties.