For an outfit that's super simple but can be flaunted in a myriad of different ways, try teaming a black and white harrington jacket with a crew-neck t-shirt. Add a dressier twist to your ensemble by rounding off with black suede loafers. Rest assured, this getup will keep you toasty as well as looking sharp in this unpredictable fall weather. So if you're scouting for style ideas on how to dress well into your 30s, this combo is perfect.