Tom Cruise, Winnie the Pooh and Joan Collins will feature in a coronation concert celebrating the crowning of King Charles and Queen Consort Camilla.
Alongside performer Sir Tom Jones and adventurer Bear Grylls, they will appear in a series of pre-recorded sketches revealing little known facts about the monarch.
The inclusion of Hollywood star Cruise, who has enjoyed a long-standing relationship with the royal family, and beloved literary figure Winnie the Pooh could create a moment to match the time when the late Queen shared tea with Paddington Bear.
Music acts Paloma Faith, Olly Murs, veteran rock guitarist Steve Winwood, Nicole Scherzinger of The Pussycat Dolls and Chinese pianist Lang Lang have also been added to the line-up.
Also among the new additions are Nigerian singer Tiwa Savage, DJ Pete Tong with his Ibiza Classics project, and winner of The Piano TV talent show, Lucy.
Bollywood star Sonam Kapoor will also deliver a spoken-word performance.
They join a billing that already includes Take That, Katy Perry and Lionel Richie, plus classical acts including Andrea Bocelli and Welsh bass-baritone Sir Bryn Terfel.
The event on May 7 in the grounds of Windsor Castle will be in front of a crowd of 20,000 members of the public and invited guests and will be broadcast across BBC television and radio stations.
-AAP