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 15 of 22 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 15 Commonwealth Day Service — March Women: It's daytime formal with a hat for the ladies. Cold weather usually means a coat. Men: Suit and tie. Previous Next Start Slideshow The RoyalsKate MiddletonThe British Royals