Swing into something refined yet trendy with a navy waistcoat and a dress shirt. Bump up this whole outfit by wearing a pair of dark purple leather brogues. Piecing together a well-coordinated look can be a bit challenging on its own. Add subzero temperatures into the equation, and the whole thing becomes even more difficult. Fear not, this here is your winter style inspo. If you want people to see maturity in you as a 20-year-old, an ensemble like this is a safe bet.