For a look that's nothing less than GQ-worthy, opt for a white waistcoat and a dress shirt. You can bet this combo will become your uniform come baking hot sunny days.
White Waistcoat with Dress Shirt Smart Casual Summer Outfits
This combination of a white waistcoat and a dress shirt is a lifesaver when you need to look like a connoisseur of modern men's fashion. A neat getup like this one is just what you need on a warm weather afternoon.