How to pull the Summer look elegantly and look aristocratic

I have sampled pictures of the late HRH The Duke Of Windsor and of HRH Prince Charles the Duke of Cornwall in Summer outfits. Both Royalties look very good, stunning, elegant and timeless in their Summer outfits. No need to look sloppy, just because it is Summer. Follow the legends and look sharp, timeless and classical.

HRH Prince Charles The Duke of Cornwall in a white silk double breasted suit, crisp white shirt, tie and a darker pocket square. Nicely done as always. 

HRH Prince Charles and Duchess of Cornwall. HRH Prince Charles in a double breasted light coloured jacket, light trousers, purplish shirt, pocket square a Panama hat. Oh the sun glasses. Nice touch

The Duke of Windsor in a double breasted white suit, crisp shirt, tie, a pocket square and white buck shoes.

The Duke of Windsor in what looks like a Seersucker single breasted suiting with patch pockets, a bow tie, a Summer hat and co-respondant loafers.

The Duke of Windsor in the same suit as above, shoes changed to buckskin shoes

All photos courtesy of different Internet sources