Pair a light blue dress shirt with a crew-neck t-shirt to put together an interesting and put together ensemble. Get a bit experimental on the shoe front and add a pair of black leather loafers to the equation. Just because you've passed the big 4-0, doesn't mean you shouldn't look fashionable, and this pairing proves just that.
Show that you do smart casual men's fashion like no-one else by opting for a light blue dress shirt and a crew-neck t-shirt. To introduce a little classiness to your getup, complement this look with white leather brogues. This combination demonstrates that as a middle-aged gentleman, you have a wide range of style options.