If you like a more laid-back approach to dressing up, why not try pairing a navy and white horizontal striped cardigan with dark green sweatpants? Introduce black leather low top sneakers to the mix and ta-da: the look is complete. With the departure of snow comes warmer, sunnier weather and the need for a killer outfit just like this one. If you're not sure how to dress maturely while looking fashionable, this getup is a solid bet.