An expert lip reader has revealed what Prince Louis was asking his siblings while he was stood on the Buckingham Palace balcony watching the RAF.
The Prince and Princess of Wales came out with the newly-crowned King Charles and Queen Camilla, and their children, Charlotte, George and Louis, to greet crowds waiting out on the Mall.
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 can be seen trying to distract his big brother, Prince George, by yelling at him across William.
Our lip reader believes Louis is saying: "See as far as that?", to which George grins and replies: "I know!"
Louis was also seen waving at fans, pointing at the sky, and screaming, putting on a very animated display.
His balcony appearance came after the five-year-old was yawning and fidgeting during the service for his grandfather's coronation.
The young royal attended the service at Westminster Abbey and unsurprisingly stole the show as he displayed a series of exuberant expressions.
During the first half of the ceremony, he could be seen letting out a big yawn, while also taking the opportunity to point out something of interest to his sister Charlotte.
He yawned again shortly after the King was crowned, just after midday. Then television footage showed he was no longer sitting in the row.
It is understood that plans were in place for him to leave the service at some point.
However, he returned for the national anthem at the end of the service and sang God Save The King before starting the procession out of the abbey.
For many, his actions have been a refreshing reminder that even royal children are immune to the pomp and pageantry surrounding them.
On Twitter, one fan joked: "I'm only here for Prince Louis facial expressions" and another admitted: "I'm waiting for #PrinceLouis to do something silly."
A third added: "I wish the camera would show more of Prince Louis, his facial expressions make this family."
