Kate Middleton beams as she cheers on England at Rugby World Cup match in France

True Royalty TV co-founder Nick Bullen says the Princess of Wales is "the power behind the throne" as she prepares to be a supportive queen consort for Prince William.

Kate Middleton was all smiles as she attended the match between England and Argentina in the first round of the Rugby World Cup in Marseilles, France on Saturday.

The 41-year-old Princess of Wales, who is the patron of the Rugby Football Union and Rugby Football League, watched from the stands at the Stade de Marseille as England emerged victorious over Argentina with a final score of 27-10.

Middleton, who was clad in a crisp white Alexander McQueen pantsuit, was pictured chatting and laughing with World Rugby chairman Sir Bill Beaumont ahead of the game.

After England's win, the Duchess of Cambridge visited the team in their locker room, where she was pictured congratulating the team's players including Courtney Lawes, Danny Care, Jonny May, Freddie Steward and Elliot Daly.

KATE MIDDLETON WOWS AT WIMBLEDON WITH BRAD PITT AND ARIANA GRANDE IN THE STANDS

Kate Middleton beamed while cheering on England in the first round of the Rugby World Cup in Marseilles, France. ( Cameron Spencer/Getty Images)

In February 2022, the late Queen Elizabeth redistributed the patronages of the organizations to Middleton.

QUEEN ELIZABETH CELEBRATED BY PRINCE WILLIAM, KATE MIDDLETON ONE YEAR AFTER DEATH: 'EXTRAORDINARY LIFE'

Middleton's husband Prince William, 41, who has been patron of the Welsh Rugby Union since 2016, will also travel to France this weekend for a Rugby World Cup match. The Prince of Wales is set to be in attendance on Sunday when Wales takes on Fiji in Bordeaux. 

The Princess of Wales, who is the patron of the Rugby Football Union and Rugby Football