Prince George has been caught nudging his boisterous younger brother Louis to wave more calmly at the crowd following the Trooping the Colour ceremony.

George, 11, Louis, seven, and their sister Charlotte, 10, watched a flypast of military aircraft from the balcony of Buckingham Palace on Saturday with their grandfather, the King, the Queen and their parents the Prince and Princess of Wales.

The King and other senior royals wore black armbands at the parade as a mark of respect for victims of the Air India plane crash.

Louis, wearing a red tie and dark suit that matched his brother’s, began enthusiastically waving at the crowd, drawing big cheers from those standing in the Mall to watch the Red Arrows fly overhead.

He briefly stopped to turn around and speak to his father, then continued to wave and grin until George gently nudged him to stop by touching his arm.

But the youngest prince could not resist giving the crowd one last wave as his family retreated into Buckingham Palace after the flypast ended.

The children had ridden to Horse Guards Parade with their mother in a carriage earlier in the day to watch the troops celebrating the King’s official birthday.

Boisterous Louis has become known for entertaining royal fans with his reactions during royal events.

During VE Day celebrations a few weeks ago, the young prince appeared to playfully imitate George as the siblings watched the military procession from the Queen Victoria Memorial.

Louis seemed to copy the way his brother flicked his hair, then smoothed down his own in an exaggerated fashion.

He similarly stole the limelight at last year’s Trooping the Colour ceremony, yawning and later dancing during the quick march of the Scots Guards to Highland Laddie.

During the 2023 Trooping the Colour parade, Louis, then aged five, ostensibly held his nose to possibly ward off the smell of horse manure from the many military mounts.

He was also seen yawning and fidgeting during the service for his grandfather’s coronation at Westminster Abbey in May 2023.

This year marks the third Trooping the Colour parade of the King’s reign.

Photo: AAP

The colour – regimental flag – trooped this year was the King’s Colour of No.7 Company Coldstream Guards, also known as the sovereign’s bodyguard. It celebrates its 375th anniversary this year.

King ‘s honouring of India crash victims

A Boeing 787-8 Dreamliner bound for London crashed shortly after takeoff from Ahmedabad, India, on Thursday, killing at least 270 people in the worst aviation disaster in a decade.

Only one of the 242 passengers and crew on board survived, while others were killed as the plane struck a medical college’s hostel as it came down.

A minute’s silence was held after the King inspected the parade, which marks his official birthday.

The King requested the changes “as a mark of respect for the lives lost, the families in mourning and all the communities affected by this awful tragedy”, a Buckingham Palace spokesperson said.