King Charles and Queen Camilla hosted the likes of the Duchess of Edinburgh and Dame Judi Dench for a premiere of Finding Harmony: A King's Vision at Windsor Castle Pool/Getty ImagesThe stars were out at Windsor Castle on Wednesday evening for the premiere of a new documentary by King Charles. Royals and A-listers alike gathered in the Waterloo Chamber for a screening of Finding Harmony: A King’s Vision, the first time such an event has ever been held at the Castle. The King himself joined Queen Camilla, the Duchess of Edinburgh and the Duke and Duchess of Gloucester at the premiere, and some of the royal family’s most trusted celebrities joined in to support the Firm. This included King’s Foundation ambassador Kate Winslet (who narrated the documentary); Dame Judi Dench; Benedict Cumberbatch and his wife, Sophie Hunter; Stanley Tucci and Felicity Blunt; Lady Penny Lancaster and Sir Rod Stewart; Sir Kenneth Branagh, and Alan Titchmarsh. The President of Guyana, Mohamed Ifraan Ali, was also in attendance, alongside the First Lady, Arya Ali.