Pair a charcoal long sleeve t-shirt with a black suit if you want to look dapper without exerting much effort. Finishing off with a pair of oxford shoes is the most effective way to bring an element of refinement to this ensemble. You know when it's super hot outside, sometimes only a proper outfit like this one can get you through the day. If you're 30, take cues from outfits like this to add more gravitas to your wardrobe.