An olive shirt jacket and shorts are the kind of casual must-haves that you can style a hundred of ways. Avoid looking too casual by rounding off with a pair of black leather tassel loafers. This combo is a pretty nice pick, especially for fall, when the temperatures are falling. As you're progressing through your late 20s, you probably want to start dressing more maturely. If that's the case, combos like this are a tested option.