Andrew, who stepped back from royal duties, wore the ceremonial robes to Saturday’s service at Westminster Abbey.
The Duke of York, who stopped using the title His Royal Highness in an official capacity in January 2022, was given permission to wear the robes despite being banned by the late Queen from wearing them in public for her last Garter Day at Windsor Castle, reported MailOnline.
Last June, Andrew did not appear alongside senior members of the family at the annual Order of the Garter despite being a Knight of the Garter.
His absence was notable at the time and Buckingham Palace had described it as a “family decision”.
Though the Duke of York did not have any official role in Saturday’s events, he was still seen wearing his Order of the Garter robe which holds special significance for the royals.
The Order of the Garter is the oldest and most senior Order of Chivalry in Britain.
According to the Royal Family website, in medieval times King Edward III was so inspired by tales of King Arthur and the chivalry of the Knights of the Round Table that he set up his own group of honourable knights, called the Order of the Garter.
Today, the order includes the King, who is Sovereign of the Garter, ‘several senior members of the Royal Family, and 24 knights chosen in recognition of their work’, according to the website.
The Order of the Garter robes are made of dark blue velvet and can be accompanied by a cap.
The robe has a white satin lining, white silk bows on the shoulders, an attached red velvet hood and tasselled cordons.
While Andrew donned Garter robes, Prince Harry, who served in Afghanistan, was wearing a morning suit with his medals.
Andrew stepped away from public life after a controversial Newsnight interview in November 2019 and the furore over his friendship with paedophile financier Jeffrey Epstein.
Meanwhile, it is understood Prince Harry wore what he was asked to wear, which consisted of a dark morning suit and tie.