King Charles hosted several A-list stars at Windsor Castle on Wednesday, as they showed up to attend the premiere of his Harmony documentary, which will release on Amazon Prime on 6 February 2026.
Charles was also joined by some royal guests, with his wife, Queen Camilla, and the Duke and Duchess of Edinburgh heading out to support the monarch.
Harmony is based on the monarch's 2010 book, Harmony: A New Way of Looking at Our World.
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The 336-page book examined the King's interest in environmentalism, and "looks at different aspects of our modern world to demonstrate how many of the challenges seen in areas as diverse as architecture, farming and medicine can be traced to how we have abandoned a classical sense of balance and proportion".
King Charles and Queen Camilla looked so glam as they attended the premiere. Camilla wore a green Anna Valentine dress, accessorising with a brooch from The King's Foundation. Meanwhile, Charles wore a smart tuxedo that featured a funky red collar.
Kate is serving as the narrator for the King's latest project, and the Titanic star looked gorgeous as she wore a striking over-the-shoulder black dress.
Judi was joined by her husband, who she married in 2010
Dame Judi Dench
Dame Judi was joined by her husband, David Mills, at the premiere. The James Bond actress looked elegant in a black outfit, completed by a scene-stealing scarf.
Marvel star Benedict was joined by his wife Sophie Hunter as the pair showed up for the premiere. Benedict wore a tuxedo for the occasion, while Sophie stunned in her purple dress.
Although the Duke of Sussex and monarch are believed to have a strained relationship, the royal appeared alongside his father in Charles' new documentary
