Despite Meghan leaving a vacant seat in the Abbey, Sarah Ferguson has also not been invited to the King’s Coronation.
The Duchess of York, 63, is anticipated to watch the ceremony on television at Royal Lodge, which she shares with her ex-husband, Prince Andrew.
Phil Dampier, a royal author, stated, “She cannot expect to be at the top of the royal pecking order.”
Despite knowing Charles since childhood, Fergie has been told she would not be among the 2,000 guests.
She is joined on the sidelines by Prince Harry’s wife Meghan, who is in the United States to celebrate her son Archie’s fourth birthday.
Both Harry and Andrew will be in attendance during the Coronation, but neither will have a formal role.
According to royal sources, there is no ill will against Fergie.
Insiders are perplexed by the omission, given that she attended the Queen’s funeral in September and spent her first Christmas with the royals in 30 years at Sandringham.
Princesses Eugenie, 33, and Beatrice, 34, are likely to attend the service at Westminster Abbey on May 6.
“I’m sure Fergie will be disappointed,” royal author Phil Dampier said, “but she has had many years of ups and downs in her relationship with the Royal Family, and I’m sure she will accept it.”