Pairing a dark brown cable sweater with a charcoal wool suit is a savvy idea for a stylish and elegant look. Kick up the fashion factor of your outfit by slipping into a pair of white canvas low top sneakers. A wonderful example of transeasonal style, this getup is ideal come warmer days. As you turn 30, you probably want to start dressing like an adult. If that's the case, inspiration like this comes in handy.