Prince Louis once again stole the show at the Coronation - as he was seen yawning during the ceremony, before energetically waving at fans and forgetting the words to the National Anthem.
Louis - who turned five on April 23 - left people in stitches with his antics at Westminster Abbey for the King's Coronation.
As he left the ceremony with his family to appear for the balcony, Louise could be seen cheering for his grandfather from the royal carriage, as he exclaimed: 'Yaaaay Say 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 Prince George.
It was anticipated that only "working royals" - those family members who carry out official duties on behalf of the King, would appear on the balcony as King Charles slims down the monarchy.
As well as the King and Queen Camilla, that would included Prince and Princess of Wales, the Duke and Duchess of Edinburgh and Princess Royal, along with other working royals such as the Duke and Duchess of Gloucester and the Duke of Kent.
For the Platinum Jubilee in 2022 there were 18 people on the balcony, including the late Queen, and her surprise appearance on the balcony in the closing moments of the weekend left people delighted
Numbers were cut back even further for the Diamond Jubilee in 2012, when only six people were on the balcony, in a show of frugality during the recession.
There has been much discussion about who will appear on the balcony - as last year Prince Harry and Prince Andrew did not appear as non-working royals.
Earlier today, the royal couple left Buckingham Palace in the Diamond Jubilee State Coach after spending the night at Clarence House and headed along the procession route to the Abbey to be crowned.
The pair waved to the crowds as they passed by in the coach, with the route lined with thousands of wellwishers and military personnel.
The coronation ceremony finished at 1pm and the newly crowned King and Queen will begin the procession back to Buckingham Palace in the gold state coach.
Some 4,000 sailors, soldiers, aviators and other military personnel from across the UK and the Commonwealth will accompany Charles and Camilla on their return procession. There will be more than 1,000 route liners from the Army, RAF and Royal Navy.
Charles and Camilla entered Buckingham Palace through the centre arch at 1.33pm.
They will received a salute from the military in the palace gardens at 1.45pm, and then at about 2.15pm they will be joined by members of the royal family on the palace balcony to watch the flypast.
The flypast to mark the King’s coronation has been scaled down due to “unsuitable weather conditions”.
More than 60 aircraft from the Royal Navy, British Army and Royal Air Force had been due to take part.
But the event will now only involve helicopters and the Red Arrows aerobatic display team, the Ministry of Defence said.
The display over The Mall and Buckingham Palace was originally meant to last for six minutes, but the scaled-down version will last for less than half of that time.
The MoD said it would last for two minutes and 30 seconds.
