Gunter Sachs, was one of the most famous and stylish men in Europe during the 60s and 70s. He is shown in this photo with his wife back then, the legendary Brigitte Bardot during a holiday in St. Tropez. Sachs is wearing a monocromatic all white outfit, yet fresh and ideal for summer, with some dark shoes, without socks (very Italian). Thr trousers seem to be a bit high waisted.
I guess most of the summer outfits I've posted lately are white, but it's the time of the year to wear light and bright colors, leave the dark colors for fall/winter; although sometimes a touch of black is not bad.