Prince Louis stole the show … again.

The little royal, who turned 5 in April, delighted the crowds at Trooping the Colour when he gave a cheeky salute on the Buckingham Palace balcony.

He was also seen throwing his fists into the air and seemingly pretending to ride a motorcycle, as his mother, Princess Kate, looked on amused.

Earlier, Louis, along with his siblings, Prince George, 9, and Princess Charlotte, 8, rode in a carriage together.

It was the second time they had ridden in a carriage for the ceremony, having made their debut last year.

The young royal delighted the crowds when he saluted.AP

The 5-year-old held his nose while riding in the carriage with his siblings, Prince George and Princess Charlotte.AFP via Getty Images
At one point, Louis held his nose, reportedly because he’d caught a whiff of horse excrement.

The children also enjoyed watching an impressive 70 aircraft zoom past for the ceremony that marks the military’s tribute to the monarch.

It’s not the first time the youngest child of the Prince and Princess of Wales has acted exuberantly on the balcony.

Princess Kate looked striking in a green dress by designer Andrew Gn.AP

Queen Camilla, and Catherine, the Princess of Wales rode in a horse carriage during the Trooping of the Colour.Imageplotter / Avalon
Last year, he pulled a face of animated looks at the late Queen Elizabeth’s jubilee celebrations.

During Trooping the Colour Saturday, the siblings sat across from their mom, Princess Kate, and Queen Camilla in the carriage.

The Princess of Wales, 41, looked resplendent in a giant hat by Philip Treacy and a bright green dress by Andrew Gn, a fashion designer from Singapore.

It was the first Trooping the Colour ceremony for the newly crowned monarch.Getty Images

King Charles and Queen Camilla wave to the crowd on the palace balcony after the Trooping of the Colour.Imageplotter / Avalon
The designer choice could have been a nod to Prince William’s environmental Earthshot Prize, which will hold its new awards ceremony in Singapore this November.

Prince William, who turns 41 on Wednesday, did not ride in a carriage. Instead, he was on horseback as Colonel of the Welsh Guards, which this year will be the regiment whose color — or flag — will be presented to the King.

King Charles, 74, also rode on horseback in the parade and was joined by the royal colonels, including his brother Prince Edward, Duke of Edinburgh, and Prince William.

Missing from the balcony was King Charles’ younger son, Prince Harry, and his family.AFP via Getty Images

Father and daughter duo, Prince William and Princess Charlotte of Wales pictured together on the balcony of Buckingham Palace.Getty Images

The little royal, who turned 5 in April gave a cheeky salute on the Buckingham Palace balcony.Getty Images
The balcony scene featured far fewer royals than in the past — keeping with the King’s desire to have a slimmed-down monarchy.

Joining the King was his sister, Princess Anne, and her husband, Vice Admiral Timothy Laurence, and Prince Edward’s wife, Sophie, Duchess of Edinburgh.

Missing, of course, was King Charles’ younger son, Prince Harry, his wife, Meghan Markle, and their children, Prince Archie and Princess Lilibet.