British Royals Attend Order of the Thistle Service at St Giles' Cathedral In Edinburgh, Scotland on July 7, 2016

Queen Elizabeth II attends the Thistle Service at St Giles' Cathedral on July 7, 2016 in Edinburgh, Scotland. The Most Ancient and Most Noble Order of the Thistle is an order of chivalry associated with Scotland.

Prince William, Duke of Cambridge attends the Thistle Service at St Giles' Cathedral on July 7, 2016 in Edinburgh, Scotland. The Most Ancient and Most Noble Order of the Thistle is an order of chivalry associated with Scotland.

Queen Elizabeth II attends the Thistle Service at St Giles' Cathedral on July 7, 2016 in Edinburgh, Scotland. The Most Ancient and Most Noble Order of the Thistle is an order of chivalry associated with Scotland.

Prince William, Duke of Cambridge attends the Thistle Service at St Giles' Cathedral on July 7, 2016 in Edinburgh, Scotland.

Queen Elizabeth II steps out of her Bentley car as she attends the Thistle Service at St Giles' Cathedral on July 7, 2016 in Edinburgh, Scotland. The Most Ancient and Most Noble Order of the Thistle is an order of chivalry associated with Scotland.

Queen Elizabeth II attends the Thistle Service at St Giles' Cathedral on July 7, 2016 in Edinburgh, Scotland. 

Queen Elizabeth II attends the Thistle Service at St Giles' Cathedral on July 7, 2016 in Edinburgh, Scotland.

Queen Elizabeth II attends the Thistle Service at St Giles' Cathedral on July 7, 2016 in Edinburgh, Scotland. The Most Ancient and Most Noble Order of the Thistle is an order of chivalry associated with Scotland.

 Prince William, Duke of Cambridge attends the Thistle Service at St Giles' Cathedral on July 7, 2016 in Edinburgh, Scotland. The Most Ancient and Most Noble Order of the Thistle is an order of chivalry associated with Scotland. 

Queen Elizabeth II attends the Thistle Service at St Giles' Cathedral on July 7, 2016 in Edinburgh, Scotland. 

Queen Elizabeth II attends the Thistle Service at St Giles' Cathedral on July 7, 2016 in Edinburgh, Scotland. The Most Ancient and Most Noble Order of the Thistle is an order of chivalry associated with Scotland.

Prince William, Duke of Cambridge attends the Thistle Service at St Giles' Cathedral on July 7, 2016 in Edinburgh, Scotland.

Queen Elizabeth II attends the Thistle Service at St Giles' Cathedral on July 7, 2016 in Edinburgh, Scotland. The Most Ancient and Most Noble Order of the Thistle is an order of chivalry associated with Scotland.

Queen Elizabeth II steps out of her Bentley car as she attends the Thistle Service at St Giles' Cathedral on July 7, 2016 in Edinburgh, Scotland.

Queen Elizabeth II (handbag detail) attends the Thistle Service at St Giles' Cathedral on July 7, 2016 in Edinburgh, Scotland.

Queen Elizabeth II attends the Thistle Service at St Giles' Cathedral on July 7, 2016 in Edinburgh, Scotland. The Most Ancient and Most Noble Order of the Thistle is an order of chivalry associated with Scotland.

Queen Elizabeth II attends the Thistle Service at St Giles' Cathedral on July 7, 2016 in Edinburgh, Scotland.

Queen Elizabeth II attends the Thistle Service at St Giles' Cathedral on July 7, 2016 in Edinburgh, Scotland.

Queen Elizabeth II attends the Thistle Service at St Giles' Cathedral on July 7, 2016 in Edinburgh, Scotland. The Most Ancient and Most Noble Order of the Thistle is an order of chivalry associated with Scotland.

Queen Elizabeth II attends the Thistle Service at St Giles' Cathedral on July 7, 2016 in Edinburgh, Scotland. The Most Ancient and Most Noble Order of the Thistle is an order of chivalry associated with Scotland.

A member of the Band of the Royal Regiment of Scotland collapses during the Thistle Service at St Giles' Cathedral on July 7, 2016 in Edinburgh, Scotland. 

Lord David Steel attends the Thistle Service at St Giles' Cathedral on July 7, 2016 in Edinburgh, Scotland. The Most Ancient and Most Noble Order of the Thistle is an order of chivalry associated with Scotland.

Lord George Robertson attends the Thistle Service at St Giles' Cathedral on July 7, 2016 in Edinburgh, Scotland. The Most Ancient and Most Noble Order of the Thistle is an order of chivalry associated with Scotland.

Princess Anne, The Princess Royal attends the Thistle Service at St Giles' Cathedral on July 7, 2016 in Edinburgh, Scotland. The Most Ancient and Most Noble Order of the Thistle is an order of chivalry associated with Scotland. 

A member of the Band of the Royal Regiment of Scotland is helped to his feet after collapsing during the Thistle Service at St Giles' Cathedral on July 7, 2016 in Edinburgh, Scotland. 

Lord David Steel attends the Thistle Service at St Giles' Cathedral on July 7, 2016 in Edinburgh, Scotland. The Most Ancient and Most Noble Order of the Thistle is an order of chivalry associated with Scotland.

A member of the Band of the Royal Regiment of Scotland collapses during the Thistle Service at St Giles' Cathedral on July 7, 2016 in Edinburgh, Scotland. 

Queen Elizabeth II attends the Thistle Service at St Giles' Cathedral on July 7, 2016 in Edinburgh, Scotland. The Most Ancient and Most Noble Order of the Thistle is an order of chivalry associated with Scotland.

Prince William, Duke of Cambridge attends the Thistle Service at St Giles' Cathedral on July 7, 2016 in Edinburgh, Scotland. The Most Ancient and Most Noble Order of the Thistle is an order of chivalry associated with Scotland.

Prince William, Duke of Cambridge and Princess Anne, The Princess Royal leave St Giles' Cathedral

Prince William, Duke of Cambridge and Princess Anne, The Princess Royal attend the Thistle Service at St Giles' Cathedral on July 7, 2016 in Edinburgh, Scotland. 

Queen Elizabeth II seen leaving St Giles' Cathedral after the Thistle Service on July 7, 2016 in Edinburgh, Scotland

Princess Anne waved as she left the cathedral with her nephew, Prince William, known as the Earl of Strathearn while in Scotland

Draped in traditional robes, Queen Elizabeth II was joined by Prince Philip for the annual ceremony at St Giles' Cathedral

(front-back) Princess Anne, The Princess Royal, Prince William, Prince Philip and the Queen lead the procession as they take part in the traditional service.

Prince William, Duke of Cambridge and Princess Anne, The Princess Royal attend the Thistle Service at St Giles' Cathedral on July 7, 2016 in Edinburgh, Scotland. 

Queen Elizabeth II and Prince Philip, Duke of Edinburgh attend the Thistle Service at St Giles' Cathedral on July 7, 2016 in Edinburgh, Scotland.