Prince Andrew is wearing military uniform tonight as he takes part in a solemn vigil around the Queen's coffin with King Charles.
The King gave his younger brother special permission to don Navy garb as Her Majesty lies in state ahead of Monday's funeral.
Andrew, 62, was also joined by siblings Princess Anne and Prince Edward for the sombre event at Westminster Hall as members of the public continued to quietly file past.
The Duke of York is no longer a working royal and was forced to wear civilian clothes as he followed his late mother's procession to Westminster Hall on Wednesday.
The Queen stripped him of all of his honorary military roles, including Colonel of the Grenadier Guards, and he gave up his HRH title.
He did, however, keep his rank as a Vice Admiral and wore his medals pinned on to a dress suit.
Prince Harry, who saw action on the front line during two tours of duty in Afghanistan, had also been denied the chance to wear his military uniform while he publicly mourned since he is no longer a working royal either.
However, Palace officials have since had a change of heart, with a source saying “common sense has prevailed”.
This means the Duke of Sussex will now be able to wear his military uniform when he is expected to join the Queen's seven other grandchildren in a separate vigil on Saturday night.
At this evening's Vigil of the Princes, the King was also accompanied by Camilla, Queen Consort.
Members of the royal family including James, Viscount Severn, Lady Louise Windsor, the Countess of Wessex, Jack Brooksbank, Zara Tindall, Mike Tindall, the Duke of Kent, Mia and Lena Tindall, the Duchess of Gloucester, and the Earl and Countess of St Andrews were also in attendance.
So too were Princess Eugenie, Princess Beatrice and her husband Edoardo Mapelli Mozzi.
Spouses of the senior royals and other family members were seen standing at the back of the hall and not by the coffin.
Andrew stepped down as an active member of the Firm following a disastrous interview on BBC Newsnight in late 2019.
During the high profile chat with Emily Maitlis, he refused to voice regret over his friendship with billionaire paedophile Jeffrey Epstein.
And earlier this year, he paid millions to settle a civil sexual assault case to Ms Giuffre, who he previously claimed never to have met.
Andrew is a former Royal Navy officer who served in the Falklands War.
He is being allowed to wear his uniform as a special mark of respect for his late mother.
The Duke of Sussex, meanwhile, was saddened at having his honorary military roles, including Captain General of the Royal Marines, taken away by the Queen post-Megxit.
At the Duke of Edinburgh’s funeral in April last year, the issue of uniform was dealt with by the Queen who decided that no members of the Royal Family should wear uniform.
It was a break with tradition but seen as the most eloquent solution to a host of problems.
Reports had suggested Andrew was considering wearing the uniform of an admiral.
He was due to be promoted to Admiral in 2020 to mark his 60th birthday before the Epstein scandal.
At tomorrow's 15-minute vigil, William, the Prince of Wales, will stand at the head and Harry at the foot of the Queen's coffin. At the King’s request, they will both be in uniform while other grandchildren will be in morning coat and dark formal dress with decorations.
William will be flanked by his cousins Zara Tindall and Peter Philips, while Harry will be with Princesses Beatrice and Eugenie, with Lady Louise and Viscount Severn at the centre of the coffin.
A royal source told the PA news agency that the grandchildren were very keen to pay their respects – just as their parents did tonight.
On Monday, Westminster Abbey is expected to be filled with over 2,000 guests for the Queen's funeral.
The cortege will then leave London for Windsor Castle and a committal service will take place at St George’s Chapel at 4pm on Monday.
Some 800 people, including members of the Queen’s Household and Windsor estate staff, will attend the committal service.
The Queen will later be buried with the Duke of Edinburgh in King George VI’s chapel in Windsor Castle in a private service at 7.30pm the same day.
The burial service conducted by the Dean of Windsor and attended by the King and royals will remain entirely private, as a “deeply personal family occasion”.
