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 18 of 22 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 18 Easter Sunday Church Service — March/April Women: Similar to the Commonwealth Service attire — daytime formal with a hat. Although the Spring celebration often calls for a splash of color. Men: Suit and tie. Previous Next Start Slideshow The RoyalsKate MiddletonThe British Royals