Prince Louis had crowds enraptured Saturday at King Charles III’s birthday celebration, otherwise known as Trooping the Colour — once again stealing the show.

Accompanied by siblings Prince George and Princess Charlotte, the royal trio waved to spectators from their carriage while en route to the Horse Guards Parade for Trooping the Colour with their mother, Kate Middleton, 41, and Queen Camilla, 75.

Audiences were captivated by the animated faces of Louis, 5, who, at one point, held his nose and grimaced.

Meanwhile, King Charles, 74, and Prince William, 40, traveled on horses, marking the first time a monarch has ridden horseback since the late Queen Elizabeth II in 1986.

After the parade, the royal family gathered on the Buckingham Palace balcony to watch a flypast, and Louis saluted onlookers.

While the newly coronated king won’t turn 75 until November, the summertime celebration is a royal tradition.

This isn’t the first time Louis has become the star of the show with his playful behavior.

At the queen’s Platinum Jubilee last year, Louis’ stunts were a welcome distraction for audiences at home.

And at Charles’ coronation last month, Louis stole the limelight while letting out a few yawns during the ceremony.

Charles was not only competing with Louis’ adorable antics Saturday, but also daughter-in-law Meghan Markle’s “Suits.”

The USA Network series became available to watch Saturday on Netflix, which is also home to Markle and Prince Harry’s bombshell docuseries.

Markle, 41, plays lawyer Rachel Zane in “Suits,” her final acting project before becoming a royal in 2018.

The former actress and her royal hubby, 38, were rumored to not be invited to Trooping of the Colour amid the Duke of Sussex’s lawsuit against Mirror Group Newspapers.

Tensions have been high within the royal family following the couple’s famous falling out with Buckingham Palace and decampment to California.

Markle remained home for Archie’s fourth birthday during the May coronation festivities, while Harry’s trip to England was short-lived, staying less than 24 hours before returning to the West Coast.