A white and black cardigan and a crew-neck t-shirt matched together are a savvy match. Our favorite of a variety of ways to complement this ensemble is white canvas low top sneakers. In winter, when warmth is top priority, it can be easy to settle for a less-than-stylish ensemble. This ensemble, however, is a striking example that you can actually stay toasty and remain stylish during winter. Those wondering how to stay stylish well into your 30s, you have your answer.