The order was established at the time to commemorate an incident in which Edward was dancing, when one of his partner’s blue garters ... Queen and Knights process in grand velvet robes, with ...

King Charles and Queen Camilla lead on Garter DayThe royal family attend the ... treated to the sight of Ladies and Knights in striking dark blue velvet robes and white plumed hats, making their ...

along with “several senior members of the royal family, and 24 knights chosen in recognition of their work”. The Order of the Garter robes are made of dark blue velvet and can be accompanied by a cap.