You'll be surprised at how super easy it is for any gent to pull together this casual ensemble. Just a white short sleeve shirt paired with a denim shirt. Why not take a sleeker approach with shoes and introduce a pair of black leather double monks to the mix? Clearly, it's easier to work through a summertime day in a fresh getup such as this one. When it comes to style tips for guys in their 50s, this look is ideal.