For an effortlessly sleek outfit, reach for a navy overcoat and a denim jacket — these pieces play pretty good together. Complement your ensemble with a pair of white leather low top sneakers to make a mostly classic look feel suddenly fun and fresh. It goes without saying that this one makes for a cool, spring-appropriate outfit. So if you're after fashion tips on what to wear as you mature into your 30s, this ensemble is a perfect example.