When the situation allows casual dressing, you can easily dress in a white cable sweater and a navy plaid long sleeve shirt. A pair of grey suede low top sneakers effortlessly dials up the style factor of your ensemble. So as you can see, it's a seriously stylish, not to mention season-appropriate, look to keep in your transitional sartorial collection. This outfit demonstrates that getting into your 30s is no reason to shed casual style altogether.