An expert explains what Princess Catherine’s ‘naughty’ smile at Prince William during the 2025 Six Nations match meant

A body language specialist pondered on Prince William and Princess Catherine’s lively banter during a sporting game. This follows her examination of the pair at a different event.

On March 15, 2025, the Prince and Princess of Wales went to Cardiff to see the Wales vs. England Six Nations game. While the sporting event was definitely exciting, it was the princess’s smile at her husband throughout the match that inspired a body language expert to ponder.

During the game at Principality Stadium, all eyes were fixed on Prince William and Princess Catherine’s animated interactions in the stands.

The pair, both dressed in stunning dark-colored suits, with the prince adding a splash of color with a striking red scarf, participated in a series of amusing conversations that revealed much about their relationship.

As the Wales vs. England Six Nations contest developed, body language expert Judi James meticulously examined William and Catherine’s interactions. She provided insight on their opposing demeanors throughout the game.

“At the start of the game, we saw Kate sitting, looking serious and even slightly tense, but William was beaming smugly as though assuming his side would win,” Judi told me.

The prince’s confidence was clear in his casual demeanor and numerous contacts with people surrounding him, including handshakes and waves to admirers. Meanwhile, the princess seemed more concentrated, her features conveying a calm intensity as she watched the action unfold.

Catherine’s tone changed as the game went on, and England gained control. Cameras recorded “Kate performing a ‘naughty’ dimpled smile.” Judi saw this as a subtle but revealing hint that she enjoyed her and her husband’s friendly competition.

Judi also noted that, while William maintained his confident, puckered-mouth grins, his wife’s emotions suggested lighthearted taunting, maybe even admitting England’s increasing advantage.

Following England’s dominating 68-14 victory over Wales, Catherine went to the locker room to speak with the players. The England team later turned to X to share a happy post, including a lovely group shot of the princess flanked by the victorious sportsmen.

The players, dressed in their white jerseys, some with indications of the arduous encounter, gathered around Catherine, who stood in the center, smiling beside them. “Thank you for joining us today, Your Royal Highness 🌹 @KensingtonRoyal,” says the post’s description.

The Prince and Princess of Wales, like Team England, used X to publish their own message following the rugby match. Their piece spotlights Notpla, an Earthshot Prize winner whose innovative seaweed-based food packaging is making waves in the fight against plastic waste.

Along with their statement, the royal couple posted a series of images from their meeting with the Notpla team at the Principality Stadium.

The photographs show William and Catherine standing on the field alongside corporate officials, with the prince and one of the reps holding biodegradable packaging.

Another shot shows the pair conversing with one of the salespeople. The post emphasized the importance of Notpla’s endeavor, claiming that the environmentally friendly packaging debuted at the Six Nations Championship and would replace over 750,000 single-use plastic products across three major venues.

 

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Before the highly anticipated Wales vs. England Six Nations tournament, the Prince and Princess of Wales met with people sponsored by the Welsh Rugby Charitable Trust, an organization that helps wounded rugby players.

The article was accompanied by numerous warm and engaging images from their vacation. The photographs show William and Catherine seated at tables covered with fresh yellow flowers, conversing with visitors in what looks to be a comfortable and amicable atmosphere.

Another photo shows the pair smiling next to a young man, their grins reflecting the positive atmosphere of the meeting. Throughout the tour, the couple looked to be genuinely interested in the talks, reaffirming their continuous support for the sport and the individuals involved.

“A pleasure to meet with players supported by the Welsh Rugby Charitable Trust ahead of today’s match in Cardiff,” the photo description reads. They also included a Welsh version of their statement to celebrate the region’s rich rugby tradition.

Rugby has long been a favorite sport in the Prince and Princess of Wales’ household, and their friendly rivalry, given their support for opposite sides, has been a source of amusing conversation for some years.

While William remains loyal to Wales, Catherine ardently supports England. This dynamic frequently results in friendly competition between the royal couple, a motif that was once again evident during their recent appearance at the Six Nations event.

 

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Their amicable banter throughout the game was not the first time their family’s rugby rivalry made headlines. The couple previously revealed that their kids, Prince George and Prince Louis, were also involved.

A 2022 social media post described how Catherine admitted that George had been practicing rugby tackles on her. Meanwhile, Louis became fascinated with the sport’s trappings, and he began taking his referee whistle to his then-nursery school.

The story also stated that William hilariously recognized how rugby has become a big source of excitement in their household, acknowledging that the athletic rivalry is now “quite the thing in the house,” while he is “trying to stay out of it.”

William’s wife’s passion for rugby extends beyond lighthearted domestic conflicts; it is a role she has embraced with enthusiasm and determination.

 

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In 2022, she became the official patron of the Rugby Football League and Rugby Football Union, solidifying her passion for the sport.

To commemorate the event, the princess turned to Instagram, using her and William’s shared account to spread the news in a lively and amusing manner. The release included a video showing Catherine in sporting attire, confidently tossing a rugby ball to professional players.

The post’s description revealed her enthusiasm. “I am so thrilled to become Patron of the Rugby Football League and Rugby Football Union—two fantastic organizations [sic] who are committed to harnessing the power that sport can have in bringing communities together and helping individuals flourish,” she told the crowd.

Catherine went on to say, “I’m looking forward to working with them at all levels of the games and cheering England on in what promises to be an exciting year for both sports!””

 

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Catherine has been a prominent and enthusiastic supporter of English rugby since taking on this role, attending big matches, encouraging young involvement, and advocating for the sport’s good influence on communities.

Her recent attendance at the Six Nations game, paired with the couple’s well-documented competitive banter, demonstrates how rugby remains a powerful and unifying factor in their family.

 

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The examined interactions between Catherine and William during the rugby game correspond to Judi’s examination of their conduct toward one another at a separate event.

The expert assessed the royal couple’s interactions at the Commonwealth Day Service, noting their comfortable and pleasant manner as they smiled and joked.”

Daily Mail Royals uploaded a small video on TikTok of William speaking something to Catherine, which caused her to grin instantaneously.

Another X post included a similar exchange, with one admirer characterizing it as “flirting in public.” His lighthearted action thrilled Catherine as they stood among the other attendees.

Judi shed light on their encounters, seeing a difference in their regular dynamic. In an interview with Mirror, she explained, “William and Kate made the body language transition from ‘unison’ behaviors to mirrored, ‘free movement’ behaviors at this formal royal event [sic].”

She noticed that since Catherine’s sickness, the pair has been “extra tactile and totally connected” in their recent public appearances, frequently employing “touches, glances, or mimed hugs to move together coupled up like ice skaters or ballroom dancers.”

However, at this ceremony, they took a more typical royal stance while still dancing in “synchronized [sic], mirrored unity.”

The expert went on to say that their conduct indicated a “more relaxed approach with no need to check or employ tie signs [sic],” implying that they were in top form for the occasion. They approached the event slightly apart, but their body language conveyed “renewed energy and positivity.”

Judi also examined the Prince of Wales’ looks, commenting, “William’s beaming smile projected ongoing pride in his wife,” while adding that he avoided the typical “steering pats and touches that can imply she has some need of support and encouragement.”

She compared his “body-scrunched pose and his very youthful smile with eye crinkling and a peek of the front teeth through his lips in response to Kate’s lean and playful smile,” which suggests “a bit of a bashful crush is still going on in their relationship.”

Prince William and Princess Catherine’s attendance at the occasion not only underlined their close friendship but also revealed their status within the royal family.