Fidgeting in his seat, yawning, and holding hands with his sister Princess Charlotte - Prince Louis was the focus of many people's attentions as he attended the Coronation service.
The five-year-old royal left people delighted as he sat with his parents and sibling - before he was whisked away for the rest of the ceremony.
For many, his actions have been a refreshing reminder that even royal children are immune to the pomp and pageantry surrounding them."
And the moment he was spotted yawning went viral - as many compared it to the moment Prince William was caught getting tired as a youngster.
It was during Prince Andrew's and Sarah Ferguson's wedding that a young and possibly bored Prince William pulled an array of cheeky faces, yawned and blew raspberries - so clearly he was a bit of a handful.
One person shared a shot of Prince William and Louis from the two events, as they jokily added: "Like Papa, like son."
And his grandfather King Charles was also caught looking unimpressed when the former Princess Elizabeth donned her fancy robes and priceless crown for her coronation in 1953.
He was famously photographed looking quite bored by the festivities, resting his head on his clenched hand with an apathetic expression on his face while standing between his grandmother the Queen Mother and aunt Princess Margaret.
He became the first child to witness his mother’s coronation as Sovereign. His sister, Princess Anne, was not allowed to attend as at two-years-old she was considered too young.
The royal family announced that back in 1953, Charles received a special hand-painted child-friendly invitation to the ceremony.
During an episode of the Royal Rota podcast, ITV News royal editor Chris Ship and Lizzie Robinson discussed Queen Elizabeth II's coronation.
Ms Robinson stated a very young Prince Charles looked bored throughout the three-hour long service.
She said: "There are some really nice details about the Queen’s coronation.
"Prince Charles was the first child to witness his mother’s coronation.
"He was only young at the time and there are pictures of him looking slightly bored."
Mr Ship added: "He had basically had enough of the three-hour service."
Ms Robinson replied: "Yes three hours, it was a very long service.
"It was also the first coronation to be televised and I think around 27 million people tuned in to see that moment."
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 are expected to enter Buckingham Palace through the centre arch at 1.33pm.
They will receive 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.
