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 2 of 22 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 2 Garter Day — June The Queen/Knights and Ladies of the Garter: Dark blue velvet cloaks pinned with the Garter Star and velvet hats decorated with ostrich and heron feathers. Women: Daytime formal plus hat. Men: Morning dress — tails and waistcoat — but no top hat. Previous Next Start Slideshow The RoyalsKate MiddletonThe British Royals