Showcase that you do casual like a pro in a navy and white plaid long sleeve shirt and a navy plaid long sleeve shirt. Round off with white and blue leather low top sneakers and ta-da: your look is complete. As you can see here, it's very easy to look on-trend and stay warm when chillier weather arrives, thanks to this getup. If you're often not sure how to dress maturely, this outfit is a practical example.