Lionel Richie and Katy Perry Perform at Royal Coronation Concert.

King Charles III and Queen Camilla attended a star-studded concert at Windsor Castle featuring Katy Perry, Lionel Richie, and others. The concert was attended by 20,000 people, including members of the royal family. The event was interspersed with serious moments, including a message from Charles on the importance of environmental conservation. Earlier in the day, thousands of picnics and street parties were held across the UK in Charles' honor. The events were intended to bring neighbors together to celebrate the crowning even as support for the monarchy wanes.