Watch King Charles III and Queen Camilla Visit ‘American Idol’ With Katy Perry and Lionel Richie After Coronation Concert: Video

Katy Perry's days on "American Idol" could be numbered, if fans of the show get their wish. Last weekend, Perry, along with Lionel Richie, skipped out on judging duties to attend King Charles' coronation and perform at the celebration the following day. She was temporarily replaced by another singer, Alanis Morisette, and several viewers feel like the change should become permanent.

Sealing the deal. Buckingham Palace released the first official portrait of King Charles III since his Saturday, May 6, coronation.

King Charles III and Queen Camilla’s unexpected cameo during Sunday’s “American Idol” was almost as big a surprise for Ryan Seacrest as it was for everyone watching.

The King and Queen appeared on American Idol as surprise guests amid the coronation celebrations.

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.

King Charles III and Queen Camilla's unexpected cameo during Sunday's was almost as big a surprise for Ryan Seacrest as it was for everyone watching.Following Sunday's new episode of, Seacrest spoke with ET's Denny Directo, and explained how quickly the high-profile cameos came together.«I have to tell you, I was driving in and my phone rings and it's the executive producer and she says, 'Well, we've got some news,'» Seacrest shared. «I thought maybe something happened [with a contestant].

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.

With judges Katy Perry and Lionel Richie across the pond in England for the coronation of King Charles III, the ABC music competition show had to get creative.Though Richie and Perry appeared live from Windsor Castle for a brief cameo, the regular judges had some A-list substitutes on the panel this week.Ed Sheeran and Alanis Morissette stepped in to help out regular judge Luke Bryan as they offered commentary on the live shows for the Top 8. Sheeran also gave a special performance ahead of the release of his newly released album, . Perry and Richie performed for the official coronation concert for King Charles III on Sunday following Saturday's coronation ceremony at Westminster Abbey.Richie previously teased to ETs plans for including them in Sunday's episode.«We are going to be live from the castle as only we could do, which is fantastic.

 saw a newly crowned King Charles III and Queen Camilla give a royal surprise to audiences from across the pond with judges Katy Perry and Lionel Richie.Charles and Camila's surprise appearance on the long-running singing competition series came at the start of Sunday's show and just hours after both Perry and Richie performed at the king's coronation concert at Windsor Castle.Perry and Richie, who were broadcasting live from the castle for their address, were met by the new monarchs who jokingly asked how long they were planning to use the room for.Jokes aside, both Charles and Camilla thanked the singers for their «brilliant» performances and invited Perry and Richie to the concert's afterparty as soon as they wrap up their Idol duties.The coronation concert proved to be an exciting one for the judges, with Richie getting Charles up on his feet with his hits, «Easy (Like Sunday Morning)» and «All Night Long,» and Perry moving Princess Charlotte to sing along to «Roar,» before having the entire audience feeling like a «Firework.»Ahead of the special concert, Perry dished to ET about the opportunity to have a part to play in the festivities. «I'm grateful I get to go. I met His Majesty-to-be a few years ago and he named me as one of the ambassadors to his organization, The British Asian Trust, which is an organization that helps fight to end child trafficking,» Perry told ET last month. «So I'm also an ambassador for UNICEF, and it really aligned with my values.

King Charles III put a modern sartorial spin on his coronation look.While much of the British monarch's coronation on Saturday inside Westminster Abbey complied with long-held tradition and protocol, Queen Elizabeth's firstborn son took some liberties with his wardrobe for the occasion — and they did not go unnoticed. Notably, the 74-year-old sovereign made the look his own by ditching the standout silk stockings and breeches worn by kings of the past, including his grandfather, King George VI. However, Charles' predecessors still appeared to influence his overall ensemble as he entered Westminster Abbey for the ceremony, sporting a crimson coronation tunic and cream overskirt reportedly inspired by those similarly worn by George V and George VI at their own coronations, according to .

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.

coronation service for his father King Charles III, 74, and is en route to the airport.The Duke of Sussex will make it home to California in time for son Archie’s 4th birthday party, the source added.Harry — who looked sad and lonely at the ceremony — spent less than 24 hours in the UK, arriving on a commercial flight Friday evening.He spent the night at Frogmore Cottage, despite being kicked out earlier this year by Charles so the home could go to his own brother, Prince Andrew.The duke arrived to King Charles’ coronation at Westminster Abbey solo, sans wife Meghan Markle, 41. This was the first time he has seen his father since he released his bombshell memoir, “Spare,” in January.Harry arrived with his cousins, Princess Beatrice and Princess Eugenie.

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

Catching up. Prince Harry and Princess Anne chatted while in attendance at King Charles III‘s coronation in London on Saturday, May 6.

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.

Prince George just made history! The second in line to the British throne became the youngest future king to have a role in coronation when he served as a page at his grandfather, King Charles III‘s, crowing ceremony on Saturday.

Prince George just made history! The second in line to the British throne became the youngest future king to have a role in coronation when he served as a page at his grandfather, King Charles III's, crowing ceremony on Saturday.The 9-year-old future monarch was spotted behind his grandfather as he stepped out of the carriage and made his way into the Nave of Westminster Abbey for his historic coronation. George looked all grown up as he wore a red overcoat and walked behind his grandfather, holding the tail end of the train of his coat. George was joined by fellow pages Lord Oliver Cholmondeley, Master Nicholas Barclay and Master Ralph Tollemache, who each walked behind the king holding portions of his robe.Meanwhile, Camilla Parker Bowles's pages of honor were her grandsons, Master Gus and Master Louis Lopes and Master Freddy Parker Bowles, and great-nephew, Master Arthur Elliot, who all made their first public debut as they held onto the extended train of her royal robe as she made her way inside . Ahead of George's big day, a spokesperson for Kensington Palace told ET, «We're all very excited about Prince George's role in the coronation,» the spokesperson said.

The day of King Charles III’s Coronation is here!

Prince Harry has landed in the United Kingdom ahead of his father King Charles III's coronation Saturday, Fox News Digital confirmed. A spokesperson for Harry and wife Meghan Markle's Archewell organization said the 38-year-old Duke of Sussex arrived Friday morning.

King Charles III’s historic Coronation on May 6 starts at 10 a.m. BST in the UK at 5 a.m. ET/2 a.m. PT in the U.S. Every major British and American network will have live coverage of the event, which you can watch live in the player embedded below.