Prince Harry and Andrew dressed in morning suits for the Queen's coffin procession after being blocked from wearing military uniforms.
The pair followed King Charles III on foot for the emotional journey from Buckingham Palace to Westminster Hall this afternoon.
And they were excluded from the salute during the procession - instead bowing their heads as the Royals including King Charles and Princess Anne saluted around them.
The new monarch was also joined by Princess Anne, Prince Edward, Prince William, Peter Phillips, vice-admiral Sir Tim Laurence, the Duke of Gloucester - the Queen's cousin - and her nephew, the Earl of Snowdon.
Meghan Markle, Kate Middleton, Sophie Wessex and the Queen Consort travelled behind in a car.
It comes as...
- The list of 500 world leaders and dignitaries attending the funeral has been revealed
- King Charles was pictured arriving at Buckingham Palace ahead of today's procession
- The Monarch's staff were left heartbroken after being axed during a church service for the Queen
- Sophie Wessex is in line for a new title in a touching nod to her friendship with Her Majesty
- Prince William and Harry will walk behind the Queen’s coffin together today
- More than 100,000 people have launched a petition for an annual Bank Holiday in honour of Her Majesty
But while leading royals are wearing military attire, Harry and Andrew have been barred from doing so.
The Duke of Sussex was told he cannot wear a military outfit throughout events honouring his grandmother the Queen.
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Last night the Duke of Sussex's spokesperson asked the focus remain on the Queen, saying the outfit he wears today doesn't diminish his service.
The spokesman said: “Prince Harry will wear a morning suit throughout events honouring his grandmother.
"His decade of military service is not determined by the uniform he wears and we respectfully ask that focus remain on the life and legacy of Her Majesty Queen Elizabeth II.”
Only working royals can dress in uniform at ceremonial occasions to mourn the Queen, meaning Prince Andrew has also had to wear a suit.
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He stood out on Monday when he was the only one among his siblings not in uniform as they walked behind their mother's coffin in Edinburgh.
Andrew, however, has been given the green light to wear military attire as "special mark of respect" for his late mother when he stands guard around her coffin during the Vigil of the Princes this week.
The exception was made as a "special mark of respect" for the Queen, who died on Thursday at the age of 96 at Balmoral.
Millions of people are making their way to London this week to say goodbye to Her Majesty while she's lying in state at Parliament's Westminster Hall.
The queue could reach lengths of 10 miles, with infrastructure currently set up to support nearly seven miles of royal fans stretching from Lambeth Bridge to Southwark Park.
If necessary, the park will accommodate an extra three miles of zig zag lines.
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Those hoping to offer their condolences to the Queen and be a part of history by viewing her coffin began to be admitted from 5pm today, with the queue open until 6.30am on Monday.
But it's not guaranteed that everyone who makes the queue will get to see the Queen's lying in state.