The Coronation of King Charles was a spectacle of pomp and pageantry with the royals out in force to celebrate the newly crowned monarch.
But despite the deeply symbolic ceremony at Westminster Abbey and the joyful procession, there was one thing royal fans were desperate to know - what members of the Firm were actually saying to each other.
There were several moments throughout the day when the likes of Charles, Queen Camilla, the Prince and Princess of Wales - and even little Prince Louis - were seen chatting.
And luckily lip readers were on hand going through footage of the historic event to give their insight into what the royal whispers might have been...
Prince Harry's joke
One royal other than the King and Queen that all eyes were on was Prince Harry, who jetted in from California solo for his father's big day.
With Meghan Markle not attending, Harry walked in alone and was sat down next to Eugenie's husband Jack Brooskbank.
According to a lip reader, Harry joked about his busy day and told Jack he would be leaving at "about quarter to four", to which Jack replied: "Oh really, when?"
Harry was also believed to have said "that's funny" to Brooksbank while smiling as they waited for Charles to arrive at Westminster Abbey.
While walking in, Harry gave courteous greetings to some of the other guests, saying "hello", "morning" and "nice to see you" to various people.
Our lip reader has also claimed he said "look at that" while noticing the grandeur of the occasion and also said "delightful".
Meanwhile during the ceremony, as the congregation paid homage to the new monarch, Harry was seen, along with the other royals around him, speaking the words: "God save King Charles. Long live King Charles. May the King live forever."
King Charles' moan
It was one of the most important days of his life, which saw him crowned in a historic spectacle at Westminster Abbey.
So it's no surprise that King Charles wanted all aspects of his Coronation day to run like clockwork.
However, when arriving in the Diamond Jubilee State Coach at Westminster Abbey, royal fans wondered why he appeared agitated.
He could be seen talking to Queen Camilla in what appeared to be an irritated manner as they waited to exit the carriage.
And a lip reader say it appears he was bemoaning keeping to the day's timetable.
The lip reader claims he uttered to his wife: "We can never be on time, there's always something..."
Cheers for grandad
Other than the King and Queen, one of the other stars of the show was Prince Louis who delighted everyone with his adorable antics.
Before his appearance on the balcony, he joined his parents, Prince George and Princess Charlotte in a carriage to join the procession back to Buckingham Palace.
As he left the ceremony with his family to appear for the balcony, Louis could be seen cheering for his grandfather from the royal carriage, as he exclaimed: 'Yaaaay king. Yaaaay king,' lip reading expert Jacqui Press told Femail.
He then appeared on the balcony, where he enthusiastically cheered at the flypast and tried to distract his brother George.
Inquisitive Louis
Meanwhile, when he moved to the balcony, it appears that Louis was very inquisitive and was keen to ask lots of questions.
Moments before the flypast began, Louis was seen adorably banging his fists on the balcony, impatiently waiting for it to start amid the rainy weather.
As the planes and helicopters started to soar in the sky, little Louis squinted and appeared to ask his older sister Charlotte: "What's those?" while she smiled.
A few moments later, he was seen trying to distract his big brother by yelling at him across William. Our lip reader believes Louis wass saying: "See as far as that?", to which George grinned and replied: "I know!"
Sophie's disappointment
Elswhere, in another balcony moment, Sophie, the new Duchess of Edinburgh, appeared to voice her disappointment about the youngster - specifically his outfit.
It came when the royals first came out onto the balcony following the historic service at Westminster Abbey.
For the occasion, Louis wore a very smart outfit made by Dege and Skinner consisting of a Hainsworth Garter Blue Doeskin Tunic with specially designed lacework embellishment to the collar, cuffs and fronts.
But instead of wearing his trademark shorts, Louis wore long black trousers with smart black shoes.
And according to lip reader Elisabeth Taunton, as Kate ushered Louis and Princess Charlotte along the balcony, Sophie mused: "It's a pity Louis didn't wear his shorts."
This then seemed to have prompted Prince William to offer up why Louis was in long trousers, who apparently said: "Oh, he didn’t want to wear his shorts" while a smiling and nodding Kate added: "Yeah."
