This combo of a dark brown blazer and a tan crew-neck t-shirt is on the casual side but guarantees that you look dapper and really stylish. Not sure how to round off this outfit? Wear a pair of brown suede double monks to turn up the style factor. As you know, the key to getting through the hottest time of year is sporting fresh combinations like this one. This is a practical illustration of how to look good in your twenties.