Her Royal Highness was joined by other members of the Royal Family for the annual event including the Duke of Edinburgh
Queen Elizabeth appoints Duchess Camilla to British Order of Garter
Order of the Garter: Queen and Royal Family attend service at St George's Chapel, Windsor Castle - Mirror Online
In pictures: Queen attends Order of the Garter Ceremony at Windsor Castle - Photo 1 of 77 - Maidenhead Advertiser
Queen arrives for Order of the Garter Service accompanied by Prince Charles and Camilla, Royal, News
What is the Order of the Garter and who are the members?, UK News
Camilla Installed as a Royal Lady of the Order of the Garter
Order of the Garter: Queen leads ceremony to honour Royals and dignitaries, Royal, News
Order of the Garter: Queen leads ceremony to honour Royals and dignitaries, Royal, News
See Every Photo of Prince William and Queen Elizabeth at the Order of the Garter Service This Morning
Foreign royals welcomed at Order of the Garter ceremony