Marrying a waistcoat and white jeans is a fail-safe way to inject your styling repertoire with some manly elegance. Tap into some Ryan Gosling stylishness and add dark green tassel loafers to the mix. This combination is a foolproof option if you're on the hunt for a great, summer-friendly combination. This pairing shows that as a 30-something Millennial guy, you have a wide range of styling options.