WATCH: For vigil, Prince Harry in military attire for first, last time in 2 years

William, the Prince of Wales, Prince Harry, Duke of Sussex, Princess Beatrice, Princess Eugenie, Lady Louise, Viscount Severn, Zara Tindall, and Peter Phillips stand beside The queen's coffin in Westminster Hall on Saturday, September 17.

Prince Harry, who had stepped down from royal duties in 2020 and was stripped of his honorary military titles, was granted special permission to be in his military attire solely for the vigil as a sign of respect for the queen.

He was, however, reportedly forbidden to wear the queen's initials ER on his uniform. — Video from The Royal Family