This combination of a white and blue long sleeve shirt and blue jeans is effortless, seriously stylish and super easy to copy. If you're clueless about how to finish, introduce a pair of boat shoes to the equation. So if you're looking for a look that's seriously stylish but also feels totally spring-friendly, this one is great. Gentlemen wondering how to dress fashionably and look good as you progress through your 20s, you have your answer.