Katy Perry wows in gold at coronation concert

Katy Perry looked like a modern-day Disney princess when she took to the stage at Windsor Castle on Sunday night for King Charles' coronation concert. 

The 38-year-old was dressed in a gold ballgown designed by Vivienne Westwood. 

Katy, who is an ambassador of the British Asian Trust's Children Protection Fund, belted out her hit songs 'Roar' and 'Firework' at the concert. 

"I am so happy to be here with you people, I love you so much. I am so happy to celebrate this whole weekend, I got to bring my mom. She is so happy to be here. We got to stay in Windsor Castle — no big deal," the American singer said during her set. 

King Charles and his wife, Queen Camilla, attended the royal event - which took place one day after they were both crowned. 

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Several other royal families were also in attendance. Prince William and his wife Catherine, the Princess of Wales, were spotted dancing along to some of the performances. 

Their children, Prince George and Princess Charlotte, also joined the festivities. 

Katy's 'American Idol' co-judge, Lionel Richie, was also one of the performers at the coronation concert.

Lionel is the Chair of the Global Ambassador Group for The Prince's Trust. He performed his 1983 classic, 'All Night Long'. 

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Katy and Lionel's appearance at the coronation concert meant they both were MIA from their 'American Idol' duties. 

Not only did they make a special appearance from across the pond but they also invited two very special guests onscreen - King Charles and Queen Camilla! 

Katy Perry Coronation

Katy had a very entertaining few days in the UK. She became a worldwide trend on Twitter when she struggled to find her seat at Westminster Abbey ahead of the King's coronation on Saturday. 

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In true Katy style, she too found the whole thing amusing and laughed the incident off. 

"Don’t worry guys I found my seat," she tweeted. 

Main image credit: Instagram/@katyperry