The King's official birthday parade, the first Trooping the Colour of Charles III's reign, has taken place in London today (June 17), with many important senior royals all taking part.
Thousands of people lined the Mall as the monarch rode on horseback joined by the Prince of Wales and the Princess Royal, all donning their military uniforms.
Meanwhile, Kate shunned military outfits and travelled by carriage, despite now colonel of the Irish Guards, although she wore a green ensemble as a nod to the regiment. She was joined by Queen Camilla, who also wore a day dress, even though she is Colonel of the Grenadier Guards.
It was all topped off with a spectacular flypast at Buckingham Palace, where around 70 aircraft from the Royal Navy, British Army and Royal Air Force took part.
As usual, several important royals were invited to the balcony at Buckingham Palace to have front row seats of the display - but it was a very small turnout.
Here we take a closer look at the royals who were at the balcony during the Trooping the Colour celebration, and importantly, those who were snubbed.
The King and Queen
Unsurprisingly, King Charles and Queen Camilla were front and centre for the historic family moment - the King in his military uniform and Camilla in a red silk dress, is inspired by the Grenadier guards, complete with a "rank insignia of a fill colonel on the epaulettes of the dress," explained BBC Presenter Huw Edwards.
They beamed as they stood side-by-side to wave to members of the public below - and seemed impressed when the RAF flypast roared overhead.
Prince William and Princess Kate
As the new heir to the throne, Prince William has been a huge support to King Charles, and once again he was by his father's side.
He and Kate had two of the best spots and seemed in their element as they chatted to their three children about the impressive Red Arrows flypast.
The Wales family are regulars on the balcony and have been involved in every appearance in recent years. They made two during the Queen's Platinum Jubilee weekend alone.
Prince George, Princess Charlotte and Prince Louis
It's always the children who make the balcony appearances fun, as the excitement on their faces is clear to see.
Prince George, nine, and Prince Louis, five, both wore matching navy suits to the event, while their sister Princess Charlotte, eight, wore a red and white dress.
Princess Anne and Vice Admiral Timothy Laurence
The King's younger sister was joined by her second husband Sir Tim on the balcony. Despite the pair tying the knot more than 30 years ago in 1992 and him accompanying her on many royal tours, he has a very low royal profile. This left many Trooping the Colour viewers wondering who he was when he joined the Firm on the balcony.
He wasn't handed a title when he married into the Royal Family, but has always been extremely close to his in-laws. In 2011, the Queen made him a Knight Commander of the Royal Victorian Order.
In the days after the Queen's death in September last year, he supported Anne as she escorted her mother's coffin back to Buckingham Palace from Scotland. He sat by his wife's side offering vital support during the long and emotional journey.
Prince Edward and Sophie, the Duke and Duchess of Edinbugh
Charles' youngest brother and his wife were also included in the line-up. Sophie is often described as the Royal Family's 'secret weapon' and is very close to Princess Kate.
While quite low down the line of succession, the couple stepped up their royal duties to fill the gaps left by Prince Andrew, Prince Harry and Meghan Markle.
They now carry out regular engagements and are a hit with royal fans.
Prince Edward, Duke of Kent
Prince Edward, Duke of Kent, is Queen Elizabeth's first cousin. The 87-year-old became Duke of Kent at just seven years old, and enrolled in the Royal Military Academy Sandhurst at 18 years old, where he graduated in 1955.
He retired from the army in 1976, but still holds a number of senior appointments.
The Duke and Duchess of Gloucester
The Duke and Duchess of Gloucester are low-profile senior royals, but are known to be some of the hardest-working members of the family.
Prince Richard, the Duke of Gloucester, is also the late Queen's first cousin and attends national and international events in support of the head of state.
He is married to Birgitte, Duchess of Gloucester, who was born in Odense, Denmark as Birgitta Eva Henriksen.
Who is missing?
The balcony line up is much smaller than we're used to seeing, which is fitting with King Charles' plans for a slimmed down monarchy.
His decision to limit the moment to just working royals, as the late Queen did with her final outings, has ruled many of his relatives out.
One of the most notable absences this year was the late Queen's youngest grandchildren, Lady Louise and James, Earl of Wessex, who are the children of Edward and Sophie.
Due to their low position in the line of succession, they aren't working royals and stay firmly out of the spotlight, but they usually have a front row spot on the balcony.
Lady Louise, who was often described as the Queen's favourite grandchild, started university in October. She took a place a St Andrew's, which is where Kate and William studied.
Other notable absences was Prince Harry and Meghan Markle who not only did not appear on the balcony, but did not attend any of the ceremony.
Disgraced Prince Andrew resigned from royal duties in May 2020. While he was invited to watch his brother be crowned - he did not appear at the event today.
Also missing were his two daughters, Princesses Beatrice and Eugenie, and their husbands. As grandchildren of Queen Elizabeth they were always included previously, but like Harry they're not working royals so weren't included.
