Disney’s photorealistic computer-animated remake of the beloved 1994 classic boasts a star-studded cast, including Donald Glover as king-in-waiting Simba and Beyonce Knowles-Carter voicing his love interest Nala.
Former actress Meghan, who is on maternity leave following the birth of son Archie, waved at waiting crowds as she arrived with her husband in London’s Leicester Square.
The duchess wore a black dress and heels with her hair swept up.
The royal couple were joined by a dazzling array of stars including Beyonce, her husband Jay-Z, Sir Elton John and Pharrell Williams.
The premiere is being held in “support of the conservation and communities work of His Royal Highness through The Royal Foundation”, Buckingham Palace said.
Meghan was out and about with Archie and Harry on Wednesday at a charity polo match with the Cambridges.
She also made two trips to Wimbledon to watch her close friend Serena Williams.
Harry and Meghan will meet some of the cast and crew before watching the film, and afterwards greet representatives from organisations doing groundbreaking work in the areas of conservation and the environment.
Disney has announced its global conservation campaign Protect the Pride to mark the movie’s release.
With conservation partners and the Royal Foundation, the drive aims to raise awareness and support efforts to recover the dwindling lion population across Africa.
Buckingham Palace said: “The Duke of Sussex has taken a deep personal interest in frontline conservation projects that work to protect Africa’s natural heritage and support both wildlife and local communities.”
Harry and Meghan are taking baby Archie to South Africa in the autumn.
The duke is also carrying out solo visits to Angola, Malawi and Botswana.