Celebrities arrive to celebrate King Charles III's Coronation, from Prince Harry, to Katy Perry and Joanna Lumley

Buckingham Palace on Friday released two new official portraits from King Charles III’s coronation, including one in which he posed with Prince William and Prince George, the next two men in line for the throne. The second portrait showed Charles and Queen Camilla with their eight Pages of Honour, which included George and Camilla’s three grandsons and great-nephew, and their Ladies in Attendance – Camilla’s sister Annabel Elliot and her friend the Marchioness of Lansdowne.

King Charles III‘s official coronation portraits have been released!

American Idol welcomed royalty onto the show on Sunday evening, with King Charles and Queen Camilla making a surprise appearance alongside Katy Perry and Lionel Richie. Judges Katy, 38, and Lionel, 73, appeared via video link on American Idol as they missed this week's show due to performing at the Coronation Concert in the UK, and chatted to host Ryan Seacrest about the historic celebrations taking place in London.

Michael Schneider Variety Editor at Large Lionel Richie and Katy Perry weren’t able to perform their normal tasks as judges on Sunday night’s “American Idol,” as they were across the pond performing for the coronation of King Charles III. So they brought back a souvenir for the show: The actual just-crowned King and Queen. King Charles III and Queen Camilla were surprise guests on “American Idol,” in a pre-taped package introduced at the start of the show by host Ryan Seacrest. The clip opens with Richie and Perry, in a room that appears to be inside Windsor Castle. Suddenly, in walks the King and Queen. “I just wanted to check, how much, how long you’ll be using this room for?” King Charles quipped to Richie. Charles then thanked Richie for attending and performing at the coronation. “Thank you so much for your brilliant performance and it was great,” he said.

Princess Kate and Prince William were in great company Sunday for King Charles III coronation concert at Windsor Castle. Their two eldest children, Prince George and Princess Charlotte, appeared to be having a blast while sitting in the royal box to watch the show with 20,000 revelers. The family cheered along as Nicole Scherzinger took the stage to sing before Katy Perry and Lionel Richie performed for the new king and queen.

A royal good time! Nicole Scherzinger, Stella McCartney, Ncuti Gatwa and more stars celebrated King Charles III’s rise to the British throne at the official Coronation Concert.

READ MORE: Join the FREE Manchester Evening News WhatsApp communityKaty Perry, who will be performing at the Coronation Concert in Windsor Castle on Sunday evening, was also invited. The singer was seen wearing a lilac outfit with a matching hat. British Vogue’s editor-in-chief Edward Enninful, BBC director-general Tim Davie, Australian musician Nick Cave, TV presenter Jay Blades, and Lord Andrew Lloyd Webber were also in attendance.

A new era! King Charles III’s official coronation has concluded with members of the royal family greeting the public from the Buckingham Palace balcony.

Taking in the moment. Princess Kate showed her father-in-law, King Charles III, a subtle sign of respect during the coronation.

Kate Middleton and Princess Charlotte made a stunning mother-daughter duo at the coronation of King Charles III on Saturday. Both Kate and daughter Charlotte, 8, wore Alexander McQueen to the ceremony, the same designer who created Kate's wedding dress in 2011. The duo also boasted coordinating headdresses. Kate, the Princess of Wales, wore an Alexander McQueen dress in ivory silk crepe with silver bullion and thread work embroidery featuring rose, thistle, daffodil and shamrock motifs, to signify the four nations in Great Britain.

coronation of King Charles III. Fry, 65, is among some of the lucky chosen few to be Westminster Abbey to watch the monumental moment Charles takes to this thrown and the crown is placed on his head for the every first time. The English actor, a good friend of Charles, was among the first celebrities spotted to line up to enter the abbey, dressed in a three piece suit, and his Order of The Phoenix medal, bestowed to figures who have helped Greece’s prestige internationally.

A truly A-list event. Celebrities including Lionel Richie and Jill Biden attended King Charles III‘s coronation ceremony at Westminster Abbey in London on Saturday, May 6.

Scots and tourists alike have turned out in droves in Edinburgh to see King Charles III crowned. The capital was caked in a fog that refused to ease on Saturday morning.

Playing his part. Prince George looked all grown up as he participated in the coronation of grandfather King Charles III on Saturday, May 6.

A family affair! King Charles III received an outpouring of support from his royal relatives — including all three of his siblings — during his coronation on Saturday, May 6.

King Charles III and Queen Camilla are set to officially have their new royal family titles bestowed upon them during the coronation ceremony.Joining the monarchs for the occasion are the senior members of the royal family, including Prince William and his son, Prince George — who each have special roles in the program. Ahead of the big day, over 2,200 invitations were sent to members of government in the U.K.

King Charles III's coronation, formalizing his role as the head of the Church of England, marks the transfer of his title and powers and the official moment he is crowned king.King Charles will be crowned with the St Edward's Crown from the 17th century, which weighs nearly five pounds, has a solid gold frame and 444 stones.Meanwhile, his wife, Camilla Parker Bowles, will be anointed and crowned as queen. Camilla will be the first divorcee to be crowned, and the coronation invitation that was released in April made headlines when it referred to her as Queen Camilla for the first time.

King Charles III's coronation, formalizing his role as the head of the Church of England, marks the transfer of his title and powers and the official moment he is crowned king.King Charles will be crowned with the St Edward's Crown from the 17th century, which weighs nearly five pounds, has a solid gold frame and 444 stones.Meanwhile, his wife, Camilla Parker Bowles, will be anointed and crowned as queen. Camilla will be the first divorcee to be crowned, and the coronation invitation that was released in April made headlines when it referred to her as Queen Camilla for the first time.

K.J. Yossman Guests have begun to arrive at Westminster Abbey in London for the coronation of King Charles III and his wife Queen Camilla. Although Charles ascended to the throne the minute Queen Elizabeth II died last year, the coronation is a ceremony to mark the formal investiture of his regal powers (such as they are in modern-day Britain). The 2,200-strong congregation who will gather to watch the St Edward’s Crown being placed atop Charles’ head include members of the royal family, politicians, aristocrats, international dignitaries and celebrities including singers Nick Cave and Lionel Richie, TV hosts Bear Grylls and comedian Rowan Atkinson, better known as his on-screen alter-ego Mr Bean.

King Charles will be officially crowned on Saturday (6 May) - finally taking up the role he has been preparing for since he was three years old. The 75-year-old royal became first in the line of succession when he was a toddler after his grandfather King George VI died on 6 February, 1952, and his mother, Elizabeth II, became Queen.