This polished combination of a navy suit and a navy and white polka dot dress shirt is a common choice among the fashion-forward chaps. If you wish to instantly tone down this ensemble with a pair of shoes, introduce white leather slip-on sneakers to the equation. Both stylish and summer-ready, you can rock a version of this getup all season long. If you're wondering what you should wear as a 30-year-old gent, this combo gives a proper idea.