Britain's Prince Harry will travel to Japan to see England face South Africa in Saturday's Rugby World Cup final in Yokohama, Buckingham Palace has announced.
Prince Harry, 35, is the patron of the Rugby Football Union, the sport's governing body in England.
The Duke of Sussex and his wife Meghan recently returned from a visit to southern Africa.
The British royal was also at the last World Cup final and presented the Webb Ellis Trophy to winning captain Richie McCaw following New Zealand's 34-17 win over Australia at Twickenham, London.
He was also a vocal supporter in the crowd in Sydney as England won the 2003 final as Jonny Wilkinson kicked a drop-goal in extra time to win a thrilling match against hosts Australia and celebrated with the team afterwards.
Buckingham Palace said further details of the prince's visit would be released later this week.
England won through to Saturday's final with a dynamic 19-7 win over New Zealand that ended the All Blacks' eight-year reign as world champions.
South Africa ground out a 19-16 semi-final victory over Wales in a turgid set-piece contest.