The Duchess of Sussex is to attend her first Royal Variety Performance alongside Prince Harry.
The couple, who are expecting their first child next Spring, will attend the 2018 performance and will be the performers on the red carpet afterwards.
Prince Harry's first attended the event in 2015, at the Royal Albert Hall, when he was 31 years old, but it will be the mother-to-be Meghan's first show.
The couple will watch Take That and the cast of Hamilton's hit musical performers take to the stage of the London Palladium on Monday evening.
The event is held in aid of the Royal Variety Charity, of which the Queen is patron.
George Ezra and Rick Astley will also perform, while the comedian and Taskmasters star Greg Davies has been confirmed as the host.
Comics at the show often take the opportunity to make jokes at the attending royals – and it is unlikely to be an exception for the duke and duchess.
In 2015, host Jack Whitehall was made at the party party of Prince Harry, saying they would turn into a nightclub after the show in his honor.
Whitehall added: "It may only be a prince, but when it comes to it, all hail the king."
The Royal Variety Performance dates back to the King George V and Queen Mary agreed to attend a Royal Command Performance at the Palace Theater in London, Artistes' Aid from the Variety Benevolent Fund and its proposed plans to build extensions to its Brinsworth House home for the elderly entertainers.
A second royal show was performed in July 1919 and billed as a celebration of peace.
It became an annual event at the suggestion of George V in 1921, when the King decreed that "the senior member of the royal family, would attend an annual performance, in favor of Brinsworth House and the Royal Variety Charity, once a year thereafter ".
Laurie Mansfield, life-president of the Royal Variety Charity, welcomed the duke and duchess's support.
"The Royal Variety Charity was so pleased that Prince Harry was able to attend his first Royal Variety Performance back in 2015, and that now their wedding year, both the Duke and the Duchess of Sussex were attending," he said.
"It will be a very memorable Royal Variety Performance."
The show helps raise money for entertainers throughout the UK, who are in need of help and assistance as a result of old age, ill-health, or hard times.
It also supports Brinsworth House, the home in Twickenham which is owned and run by the charity.
Additional reporting by Press Association