The royal family put on a united front amid the recent controversy plaguing them following the release of Omid Scobie's controversial book, "Endgame."

King Charles, Queen Camilla, Prince William and Kate Middleton joined forces on Tuesday when they attended the annual Diplomatic Reception at Buckingham Palace. The glamorous tie and tiara gathering was attended by over 500 guests, and the four senior royals reportedly showed their resilience at the event.

Body language expert Judi James told the Mirror that among the foursome, the monarch was "the only one in the group not looking directly into the camera and therefore the only one not 'on message' with the 'unbothered' narrative."

"Charles has never basked in the idea of meaningful press poses though, so his apparent reluctance to play ball here could be down to quiet disdain rather than unease or evasion," James explained.

"The body poses and subtle angles here do confirm the idea of continuing unity. Charles and his eldest son stand side by side, and their mirrored inward head tilts would signal aligned thinking and a sense of taking an agreed stance. Camilla and Kate are both close to their husbands, tucked in slightly behind Charles and William in another mirrored signal of support."

James also noticed the Prince and Princess of Wales' mirrored poses. Middleton's fingers touched together lightly while Prince William clasped his hands in front of his torso.

She sensed a degree of optimism in the younger royals. However, she also observed how Prince William reportedly "acquired a slightly clenched teeth" when he smiles, suggesting "inner tension or even anger."

She also weighed in on the four royals' united photo and acknowledged the Queen's reaction, which had the "greatest impact," according to her.

"She normally has a tendency to look slightly nervous or passive when grouped with her husband and his glamorous son and daughter-in-law, but here, her facial expression is the most active of the group, picking her out at the strongest in terms of emotion and resilience," James said of Queen Camilla.

According to the "Body Language Bible" author, the Duke and Duchess of Cambridge's facial expressions looked "regal but passive," while Camilla's was "much more active in terms of promoting a look of gleaming resilience."

The Dutch version of "Endgame," which had been pulled from bookshops, allegedly named King Charles and Middleton as the racist royals. Scobie insisted that he never dropped the names in his manuscript and blamed it on a translation error.

However, the Dutch translator of the book, Saskia Peeters, hit back and said she only worked on the material provided and didn't add the names. Some experts were also not convinced it was a translation error because one couldn't just mistranslate names.

Tags: King Charles Queen Camilla Prince William Kate Middleton