This combination of a navy three piece suit and a white dress shirt couldn't possibly come across other than ridiculously stylish and sophisticated. To inject an easy-going feel into your outfit, complement this outfit with a pair of black leather derby shoes. So so as you can see, it's a killer, not to mention season-appropriate, combination to keep in your seasonal rotation. When it comes to style tips for guys in their 30s, this getup suits almost any gentleman.