Popsugar Fashion Kate Middleton The Royal Dress Code Rules There Are Very Specific Rules When It Comes to Dressing For the Royal Calendar June 25, 2017 by Marcia Moody View On One Page Photo 3 of 22 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 3 Polo (Royal Box) — Summer Women: Dresses, skirts, or tailored trousers. No flip-flops. Men: Collared shirts, trousers, and jackets. No shorts no matter how hot it is. Previous Next Start Slideshow The RoyalsKate MiddletonThe British Royals