A grey wool suit and a grey turtleneck are absolute mainstays if you're piecing together a smart closet that matches up to the highest sartorial standards. Go off the beaten path and jazz up your ensemble by finishing with white leather low top sneakers. An amazing example of transeasonal fashion, this outfit is a must-have when spring sets it. As you're transitioning from your 20s to your 30s, you want to start dressing more professionally. If that's the case, getups like this become a great source of inspiration.