This is hard proof that a tan suit and a white and navy vertical striped dress shirt look awesome when you team them up in a classy ensemble for a modern gentleman. Put a relaxed spin on your ensemble by wearing boat shoes. Totally summer-friendly, you can rock a version of this ensemble throughout the season. As a 30-something Millennial gent, you want to start dressing more like a mature gentleman. In this case, outfits like this are perfect as inspo.