Queen Camilla's ex-husband Andrew Parker Bowles is attending the King's coronation

Among the over 2,000 guests personally invited to King Charles III's coronation in Westminster Abbey this weekend is Queen Camilla's ex-husband Andrew Parker Bowles.

While it might seem a little bit unorthodox to invite an ex along to a ceremony like this, Camilla's family will be playing a part in today's coronation, so it only makes sense that her first husband was asked to come along.

Camilla, whose title has recently been changed from Queen Consort to Queen, was married to Andrew Parker Bowles from 1973 to 1995.

Together, they share children Tom and Laura, and grandchildren Lola, Freddy, Eliza, and twins Gus and Louis.

Camilla then went on to marry Charles in 1995, at a ceremony that both her children Tom and Laura were present for.

At today's coronation ceremony, Camilla's grandchildren Freddy, Louis, and Gus will serve as her Pages of Honor, alongside Camilla's great-nephew Arthur.

Although Camilla and Andrew have been divorced for quite some time and have both since remarried, they have remained friends over the years, and often spend time together with their children.

Speaking to Good Morning Britain about Andrew Parker Bowles' appearance at the coronation, Royal Historian Wesley Kerr told Good Morning Britain explained: "He's going to be here today in a place of honour. His two children, their mother's the queen.

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"And they're actually very good friends... they have a very civilised relationship, they often meet up with the children at Ray Mill House."

He continued: "This is one of the amazing things today, the blended family. The King has been divorced, the Queen has been divorced, but we're fine with it."

Meanwhile, a friend told the Sunday Times of Camilla and Andrew's enduring friendship: "They are joined at the hip. He arranges so much for her.

"They have lunch together the whole time. He’s right in there. He was always, and still is, Camilla’s co-conspirator."

The former couple announced their divorce in 1995.

Neither Andrew nor Camilla went into detail about the split, but in an official statement, they noted that: "throughout our marriage we have always tended to follow rather different interests, but in recent years we have led completely separate lives."

One year later, Andrew Parker Bowles married Rosemary Pitman, who sadly passed away in 2010 of cancer.

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Meanwhile, Camilla, of course, went on to marry Charles - formerly the Prince of Wales - in 2005, and she was named Duchess of Cornwall.

Although Queen Elizabeth II did not attend the couple's wedding, she did host a reception afterward at Windsor Castle.

Last year, shortly before her passing, Queen Elizabeth announced that, upon her death, Camilla would be known as Queen Consort.

That all changes today, though, as she will now officially be referred to as Queen Camilla while she serves alongside her husband King Charles III.