Prince Harry and Meghan Markle are expected to miss out on a historic moment during the King's Coronation.
Buckingham Palace has unveiled plans for the event with a weekend of pomp and ceremony from Saturday May 6 to Monday May 8.
The Coronation of King Charles will be held at Westminster Abbey and the service will be conducted by the Archbishop of Canterbury on Saturday May 6.
Huge crowds are expected to descend on London for the ceremony, which will also see Queen Consort Camilla officially crowned.
A Buckingham Palace spokesperson said: "It is solemn religious service, as well as an occasion for celebration and pageantry."
A special celebratory concert will be held the following day at Windsor Castle - while festivities will continue into a Bank Holiday Monday. Members of the public will have the chance to attend Sunday's celebration by entering a ballot, the palace announced - with "some of the world's biggest entertainers" set to perform.
But the Duke and Duchess of Sussex are unlikely to be part of the royal line-up on the balcony of Buckingham Palace following the Coronation service.
During the Queen's Platinum Jubilee celebrations last summer, Harry and Meghan were absent from the Buckingham Palace balcony as working royals lined up alongside the monarch.
Prince Andrew also missed out on the moment and it's believed King Charles will follow a similar protocol and put the focus on working royals after the ceremony, reports the Mail on Sunday.
A senior royal insider said that it would be 'unlikely' that Harry and Meghan would be included in major public appearances, including the balcony moment.
Relations between the royals and the Sussexes have soured after the Duke and Duchess announced they had relinquished their official duties three years ago.
Harry and Meghan's Netflix series, the release of his memoir 'Spare' earlier this month and the large number of promotional interviews have also sparked tension.
It remains to be seen at this point whether Harry and Meghan, who stepped down as working royals in January 2020, will attend the Coronation.
The Westminster Abbey service also falls on the fourth birthday of their son Archie.
Royal biographer Ingrid Seward suggests Harry and Meghan will be invited.
She told the Sun on Sunday: "Will Harry and Meghan be invited? Of course. Harry will attend, as how can you write a book about forgiveness and not turn up to your dad’s Coronation? Meghan, I am not so sure."
The Coronation Big Lunch, where neighbours and communities share food and fun together, will take place across the country on May 7, while members of the of the public will be invited to take part in The Big Help Out On May 8 which will encourage people to try volunteering for themselves and join the work being undertaken to support their local areas.
A palace spokesman said: "Their Majesties The King and The Queen Consort hope the Coronation Weekend will provide an opportunity to spend time and celebrate with friends, families and communities across the United Kingdom, the Realms and the Commonwealth.
"Their Majesties are looking forward to marking the occasion with the public throughout 2023."
