• On January 28, King Charles and Queen Camilla attended the premiere of his new documentary, Finding Harmony, at Windsor Castle.
  • It was the first time an event like that had been held at the castle, and came ahead of the film’s release on Amazon Prime on February 6.
  • Prince Harry made a surprise cameo in the film, seen in archival footage with his father.

Celebrities came out en masse to Windsor Castle on January 28 for the premiere of King Charles’s new documentary, Finding Harmony—and caught a surprise cameo by the King’s son Prince Harry in the film.

Stars like Kate Winslet—who narrated the documentary—Judi Dench, Benedict Cumberbatch, Rod Stewart, and Stanley Tucci visited the castle on Wednesday, the first time a film screening like this had ever taken place there. The film follows the King’s lifelong dedication to environmentalism, with the “harmony” in the project’s title referring to Charles’s belief “that we are actually nature ourselves, we are a part of it, not apart from it, which is really how things are being presented for so long.” Per Tatler, the King spoke of the harmony needed between nature and humanity and his hope that “Maybe, by the time I shuffle off this mortal coil, there might be a little more awareness…of the need to bring things back together again.”

Prince William, Prince Charles, and Prince Harry at Balmoral on August 12, 1997.

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In a striking parallel a la bringing things back together again, the Duke of Sussex makes a surprise cameo in the film as father and son work to mend their fractured relationship. The appearance was minor and was from archival footage—but the fact that Harry was in the documentary does speak volumes. According to Hello!, “a short moment in the film showed a sweet father-son moment between the pair, with the duo seen fishing together when Harry was still a child.”

Prince William also appears twice in Finding Harmony, “once lying with his father in the grass when he was a child, and another visiting a herd of cows at Home Farm, when William was in his 20s,” according to the outlet. Princess Charlotte and Prince Louis also appear in the film, joining the King in archival footage from his 2023 coronation.

Prince Charles, Prince William, and Prince Harry play with their black Labrador, Widgeon, by the River Dee in 1997.
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The film will be released on Amazon Prime on February 6, and in its trailer Charles said, “I think we need to follow harmony if we are going to ensure that this planet can support so many. It’s unlikely there’s anywhere else.”

Kate Winslet at Windsor Castle on January 28, 2026.

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“It is therefore my fondest hope that this film may encourage a new audience to learn about the philosophy of harmony—and perhaps inspire the same sense of determination it has given me to help build a more sustainable future,” he added.

Queen Camilla and King Charles on January 28, 2026.

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As for harmony between Charles and Harry, the last time the two are known to have seen one another face-to-face was last September, when Harry stopped by Charles’s London home, Clarence House, for a tea that lasted just under an hour. When Harry was in the U.K. earlier this month as part of his lawsuit against the publisher of The Daily Mail, father and son are not thought to have seen each other, and when Charles and Queen Camilla visit the United States in April, he and Harry aren’t expected to meet up then, either.

Queen Camilla, King Charles, and Stanley Tucci at the premiere of ‘Finding Harmony’.

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Queen Camilla on January 28, 2026.

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Speaking of Camilla, on Wednesday evening the Queen wore a velvet dress from Anna Valentine—a favorite designer of hers—which she paired with a ring from the Royal Collection Trust and her beloved Van Cleef and Arpels vintage Alhambra bracelet. She added turquoise and diamond earrings to complete the look, which she also wore for Charles’s 50th birthday celebrations back in 1998, as well as at her first-ever Diplomatic Reception at Buckingham Palace following her wedding to Charles in 2005. She also, movingly, wore a hand-crafted brooch, made by embroidery graduates from the King’s Foundation.