- The Queen will mark her official birthday with the Trooping the Colour at Whitehall's Horse Guards Parade
- Royal fans will be eager to see the Duke and Duchess of Sussex, who married exactly three weeks ago today
- Her Majesty, who recently had an eye operation to remove a cataract, will watch from a dais in Horse Guards
- And later she will join members of monarchy on Buckingham Palace's balcony to watch the RAF flypast
Fresh from their rumoured mini-honeymoon spent in Co. Mayo, Ireland, newlyweds Prince Harry and Meghan arrived at Buckingham Palace today for their first formal engagement since their showstopping wedding in May.
The Duke and Duchess of Sussex paid tribute to the Queen at the spectacular Trooping The Colour ceremony, in celebration of Her Majesty's official 92nd birthday, for a traditional summer spectacle watched by thousands.
The Queen, who recently had a successful eye operation to remove a cataract, was pictured wearing her usual clear framed spectacles, having spent the previous three weeks wearing shaded lenses following the procedure.
Harry and Meghan were pictured riding in a carriage together, staged on Whitehall's Horse Guards Parade, and later joined members of the monarchy on Buckingham Palace's balcony for the first time together to watch the RAF flypast and acknowledge the crowds.
Tens of thousands of cheering Royal enthusiasts flocked to Whitehall to see the royals mingle on the balcony, with Meghan and Kate sharing a chuckle while Harry watched on.
Meghan wore a dress by Carolina Herrera and a hat by Philip Treacy. While Kate wore a dress by Alexander McQueen and a hat by Juliette Botterill.
Camilla was in a pale blue silk dress and coat by Bruce Oldfield and a hat by Philip Treacy and the Queen wore a sky blue coat and dress by Stuart Parvin, and a hat by Angela Kelly.
Moving along the procession today, the Duchess of Cornwall and Duchess of Cambridge were in a carriage together while a third carried Princesses Beatrice and Eugenie, the Countess of Wessex and her daughter Lady Louise.
Trooping the Colour is a ceremonial spectacle that brings together prestigious regiments and the families of the serving men and women in celebration of the monarch's official birthday.
Stands lining Horse Guards were filled with the wives, girlfriends and parents of the servicemen who when not performing ceremonial duties are fighting soldiers.
The Duchess of Cambridge and the Duchess of Cornwall take their place in the Queen's carriage procession, which celebrate's Her Majesty's official 92nd birthday
After the ceremony the royal family will head back to Buckingham Palace and gather on the balcony to watch the RAF flypast
Meghan, Harry and the other members of the royal family took their place in Wellington's former office which overlooks the parade ground.
The Queen soon made her entrance onto Horse Guards in an Ascot Landau after making her journey from her famous London home Buckingham Palace.
Her procession was accompanied by a Sovereign's Escort of the Household Cavalry, made up of Life Guards and Blues and Royals, in their silver and gold breastplates and plumed helmets.
The 7,500 guests seated in stands lining the parade ground stood as a mark of respect as the monarch arrived and began inspecting the massed ranks of the troops.
The Duke of Edinburgh, who celebrates his 97th birthday on Sunday, has retired from official public duties and did not attend.
But the Queen was accompanied by the royal colonels, all on horseback: Prince of Wales, Colonel of the Welsh Guards, the Princess Royal, Colonel of the Blues and Royals, and the Duke of Cambridge, Colonel of the Irish Guards.
Also riding in the ceremony for the first time was the Duke of York in his new role as Colonel of the Grenadier Guards.
Among the guests was Defence Secretary Gavin Williamson, the Prime Minister Theresa May normally attends but is at a G7 meeting of world leaders in Canada.
The colour trooped this year was the flag of the 1st Battalion Coldstream Guards.
Trooping the Colour originated from traditional preparations for battleWhile also taking part was the King's Troop Royal Horse Artillery, who will fire a 41-gun salute in Green Park to mark the Queen's official birthday.
The colour was first trooped through the ranks of soldiers before the Guardsmen marched past the Queen, first in slow then in quick time.
As the ceremony came to an end, the thousands in the stands were treated to the sight of the Blues and Royals and Life Guards from the Household Cavalry Regiment.
The mounted soldiers and officers in their gleaming breast plates and plumed helmets rode past the Queen with the horses throwing up dust.
Not all event-goers were on their best behaviour however, with woman woman arrested after throwing an object at the procession.
Scotland Yard said that a woman has been arrested after an object was thrown at the Trooping the Colour procession.
A spokesman said: 'A 51-year-old woman was arrested for a public order offence after an item was thrown towards a procession at the Trooping the Colour.
'She is currently in custody at a central London police station.'
Crowds look on as soldiers of the 1st Battalion Coldstream Guards during the Trooping the Colour ceremony at Horse Guards Parade
As with previous years, the Duchess of Cambridge and the Duchess of Cornwall took part in the Queen's carriage procession.
The procession will be accompanied by a Sovereign's Escort of the Household Cavalry, made up of Life Guards and Blues and Royals, in their silver and gold breastplates and plumed helmets.
The massed bands of the Household Division will provide musical backing during the day and also taking part is the King's Troop Royal Horse Artillery who, following the parade, will fire a 41-gun salute in Green Park to mark the Queen's official birthday.A Coldstream Guards soldier who will wear a turban as he parades during Trooping the Colour has said he hopes it is looked upon as a 'new change in history'.
More than 1,000 soldiers will take part in the ceremony which marks the Queen's official birthday on Saturday as the nation honours the monarch.
For Guardsman Charanpreet Singh Lall the event is not only his first Trooping the Colour, but also marks the first time a member of the Coldstream Guards has taken part wearing a turban.
The 22-year-old from Leicester told the said: 'I hope that people watching, that they will just acknowledge it and that they will look at it as a new change in history.
'I hope that more people like me, not just Sikhs but from other religions and different backgrounds, that they will be encouraged to join the Army.'
A member of the 1st Battalion Coldstream Guards, the turban he will be wearing during Trooping the Colour will be black, featuring the ceremonial cap star to match the bearskin hats.Gdsm Lall who joined the British Army in January 2016, was born in Punjab, India, and moved to the UK as a baby, said he is feeling 'quite excited' ahead of the event.
'I'm quite proud and I know that a lot of other people are proud of me as well,' he said.
'It is a good feeling... there's going to be a lot of eyes and I am going to have an influence on other people.'Trooping the Colour originated from traditional preparations for battle.
Colours, or flags, were carried, or 'trooped', down the ranks so they could be seen and recognised by the soldiers.
In the 18th century, guards from the Royal palaces assembled daily on Horse Guards to 'troop the colours', and in 1748 it was announced the parade would also mark the Sovereign's official birthday.
This year the ceremony, which is staged every June in London's historic Horse Guards Parade, will see the Colour of the 1st Battalion the Coldstream Guards being trooped.With weeks of rigorous training under his belt, on the day he and many other soldiers will wear immaculate uniforms and march with precision up the Mall and onto parade.
Gdsm Lall added: 'For myself, being the first turban-wearing sikh to troop the colour and to be part of the escort it is a really high honour for myself, and hopefully for everyone else as well.'
He revealed his family including his mother, father and sister, who are 'really, really proud' of him, will be coming to watch him take part.
'My mum was crying on the day I passed out so I wonder what is going to happen to her when she sees me in this,' Gdsm Lall added.