While viewing the Platinum Jubilee Pageant on Sunday, Prince Louis demonstrated some rather unregal conduct.
In a video that has now gone viral on social media, the 4-year-old was filmed placing his hand over his mother Kate Middleton's mouth.
When the Duchess of Cambridge, 40, tried to stop him respectfully – not likely through clenched teeth – the rowdy teen made a variety of expressions, stuck his tongue out, and put his thumb to his nose while wiggling his remaining fingers.
Louis also chose to stand on his chair and toss a pillow, which is when Kate wisely opted to take a break and spend some time with her youngest.
Mike Tindall, who is married to Prince William's cousin Zara Tindall, was taken aback by Louis' actions.
The retired rugby player was photographed telling Louis jokingly that he was keeping an eye on him (and no doubt expecting him to be a good little boy).
The cute toddler also got the opportunity to give his mother a huge kiss and spend some time with his grandfather, Prince Charles.
It wasn't the first time Louis had flaunted his boisterous personality in public.
He and his siblings, Prince George and Princess Charlotte, watched the procession through the Palace windows during the Trooping the Colour ceremony on Thursday. With a hearty salutation, Louis stole the show.
As the royal family gathered to wave, he stormed onto the balcony, barreling past his 96-year-old great-grandmother for a front-row seat. Louis was caught making a variety of expressive faces, including a scream, hands over his ears, and eyes clenched shut in response to noisy warplanes flying overhead.
While on the balcony, Lipreaders deduced that he simply instructed Charlotte to "move aside."
At the conclusion of the Platinum Jubilee Pageant, Louis joined his parents, siblings, Prince Charles, Camilla Parker-Bowles, and the Queen on the Buckingham Palace balcony — but this time Mum was not taking any risks. When her son, who bears a striking likeness to her father, Michael Middleton, pushed forward, the Duchess stepped close behind him and reined him in.
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