King Charles and Queen Camilla could miss super-rich Duke of Westminster’s ‘wedding of the year’ after snub when his sister got married, writes RICHARD EDEN

The society wedding of the year is less than three weeks away, but King Charles and Queen Camilla still haven’t confirmed their attendance, I hear.

And the postponement has sparked feverish speculation among friends and family of the Duke of Westminster, Hugh Grosvenor, and his bride-to-be, Olivia Henson.

“Their Majesties have not forgotten what happened at Hugh’s sister’s wedding,” a source said. “There’s still a lot of tension.”

The King and Queen chose to decline their invitations to the 2004 wedding of the Duke’s sister, Lady Tamara Grosvenor, and Edward van Cutsem, a godson of His Majesty. It was held at the same venue as the Duke’s wedding next month – Chester Cathedral.

Camilla Parker Bowles, as she then was, had been told not to sit with Prince Charles and would instead have to sit several rows back and arrive separately. This was because Queen Elizabeth and Prince Philip attended the ceremony, along with Princes William and Harry.

Duke of Westminster, Hugh Grosvenor, and his bride-to-be, Olivia Henson. The king and queen’s delay has sparked feverish speculation among friends and family. “Their Majesties have not forgotten what happened at Hugh’s sister’s wedding,” a source said. “There’s still a lot of tension.”

Harry and Meghan have already been ruled out of next month’s wedding, even though Hugh, who has an estimated fortune of £10 billion, is reportedly the godfather of their son Prince Archie. Hugh is said to have felt that the Sussexes’ actions could cause tensions with the royal family

According to royal author Sarah Bradford, Camilla was so furious that she told Charles that the status quo was no longer acceptable. Their own engagement was announced three months later

“Her Majesty is a stickler for protocol,” a courtier explained at the time. “It would be inappropriate for Mrs Parker Bowles to sit next to Prince Charles as she has no official status.”

Tensions were heightened by reports that Emilie van Cutsem, the groom’s mother, and Camilla had fallen out after both allegedly criticized the behavior of the other’s children.

Charles eventually excused himself with just a few days left of the event, saying he had to visit Warminster Barracks to meet the families of soldiers serving in Iraq. Camilla was described as ‘otherwise involved’.

According to royal author Sarah Bradford, Camilla was so furious that she told Charles that the status quo was no longer acceptable. Their own engagement was announced three months later.

The Duke and Duchess of Sussex have already been ruled out of next month’s wedding, even though Hugh, who has an estimated fortune of £10 billion, is reportedly the godfather of their son Prince Archie.

Hugh is said to have felt that the Sussexes’ actions could cause tensions with the royal family. Harry is said to have mistakenly received a ‘save-the-date’ email.

The wedding of Lady Tamara Grosvenor and Edward van Cutsem. The King and Queen chose to decline their invitations to the 2004 wedding

Chester Cathedral, where the Duke’s wedding will take place next month

Hugh is said to have felt that the Sussexes’ actions could cause tensions with the royal family. Harry is said to have mistakenly received a ‘save-the-date’ email

Prince Harry and Prince William at the wedding of Edward van Cutsem and Lady Tamara Grosvenor in 2004

The Prince and Princess of Wales and their eldest son, Prince George, Hugh’s godson, are invited to the wedding. However, Catherine is not expected to attend as she is undergoing cancer treatment

However, sources ‘close to’ the Sussexes later said: ‘Harry called Hugh and said it would be too awkward for him and Meghan Markle to attend, so he apologized and Hugh understood.’

The Prince and Princess of Wales and their eldest son, Prince George, Hugh’s godson, are invited to the wedding. However, Catherine is not expected to attend as she is undergoing cancer treatment.

A Buckingham Palace spokesperson declined to comment. The Duke of Westminster’s spokesman is also silent.