An Australian man made headlines last month when he came forward claiming to be the secret son of Prince Charles and Camilla...
And now, he has made some wild claims about Princess Diana's involvement in the cover-up.
Here's the full story...
Now, rumors surrounding the true extent of Charles and Camilla's relationship have been rife for decades.
The couple first met in 1970 at a Polo match at Windsor Castle and quickly hit it off.
They dated for around a year, however, after Charles left to go overseas with the Royal Navy, Camilla reconnected with her former partner, Andrew Parker Bowles, and they got engaged.
Camilla went on to marry Parker Bowles in 1973...
And Charles married Lady Diana Spencer 7 years on in 1980.
However, despite their separation, Charles and Camilla remained firm friends.
In 1995, just before their divorce, Princess Diana gave that BBC Panorama interview where she revealed she had known about her husband's affair with Camilla.
"Well, there were 3 of us in this marriage, so it was a bit crowded," Princess Diana famously said of Camilla's role in their lives.
So people were hardly surprised when, a year on from Diana's tragic death, Charles began the process of legitimizing his and Camilla's relationship.
In 1998, Charles confirmed a report in a British tabloid that Camilla had met Prince William, with the papers speculating that she would soon be meeting Prince Harry, too.
And the rest is history.
Despite a frosty start with the Queen, who allegedly disapproved of a divorcee entering the family, Camilla became a solid part of the monarchy and married Charles in a civil ceremony in 2005, thirty-five years after their friendship initially blossomed.
Since then, Charles and Camilla have enjoyed a happy and drama-free marriage in the public eye.
But last month, a royal spanner was thrown into the works.
As stated earlier, an Australian man has come forward claiming to be the secret love child of Charles and Camilla.
Fifty-five-year-old Simon Charles Dorante-Day is convinced that the Duke and Duchess of Cornwall are his biological parents and has given various interviews to provide "proof" that he is at the center of a far-fetched cover-up.
Of course, people don't quite know what to make of his wild claims...
If he’s Charles and Camilla’s son then I’m the popes secret love child with Lady bloody Gaga #thismorning— Dave (@DavidMackayy) April 29, 2021
Just caught some interview kicking off on #ThisMorning about an Australian guy claiming to be Charles and Camilla’s son. The wife kicking off in the background, the royal biographer fuming, swearing - had it all 😂— Hannah (@HannahisMusic) April 29, 2021
If this guy is Charles and Camilla's secret son, then I'm Barack and Michelle's secret daughter! 🙄 #ThisMorning— J🇬🇧🇳🇬🦁❤ (@MissLionHeart) April 29, 2021
“I’m Prince Charles and Camilla’s secret son”— Katrina (@kreanne2704) April 29, 2021
Why is this nonsense even a segment🤦🏾♀️ #ThisMorning
Things are getting seriously heated just over a man who makes a " claim" that he's Charles and Camilla 's son yet he actually has no evidence whatsoever 😂😂 #ThisMorning— Ryan Glendenning (@RyanGTweetsTV) April 29, 2021
There will be an awkward conversation at Buckingham Palace if this man DOES turn out to be Charles and Camilla’s son... 🙄🙄#ThisMorning— Jan Gullu (@JanGullu) April 29, 2021
I just watched the crazy bloke who thought he was Charles and Camilla's son He looked older than Charles. 😅😅😅— Andi5008 (@Andi000211) April 29, 2021
Simon was conceived in 1965 when Charles was just seventeen and Camilla was eighteen.
OK second Cab off the rank - Wow hooked some people with the Trello board didn't I 😂🤣I do like fishing - Simon was the...Posted by Simon Charles Dorante-Day on Monday, 16 March 2020
Despite this being 5 years before the royal couple is understood to have met, Simon, who is a father-of-9, claims Camilla fell pregnant and kept it a secret.
"My grandmother, who had worked for the Queen, told me outright that I was Camilla and Charles' son many times," he had originally told 7 News.
An interesting comparison from Susan that I just found buried in the messages from Easter 🥰 Oh, I see Liam on the right...Posted by Simon Charles Dorante-Day on Saturday, 22 August 2020
"We owe it to our children for them to have answers... At the end of the day, I'm just a man who's looking for his biological parents - and every road takes me to Charles and Camilla."
He even claimed to have met Camilla several times as a child.
My wife is rightly very defensive of me, and this issue, we make no apologies, you still yet don't know nor understand...Posted by Simon Charles Dorante-Day on Thursday, 29 April 2021
As a young boy growing up in Hampshire, Simon says he was taken to a number of impressive homes to meet his biological mother.
"I remember going to this house on top of the hill, and I was taken to the front door and my adoptive mother knocked on the front door – she never went in, I just went in."
But, speaking on the British morning show, This Morning, he recalled his adopted mom and grandmother saying that the "visitations needed to stop."
"I was walking to my nan's [house] when I was about 5 or 6 and I heard nan say to mom, 'Well, the visitations have got to stop, he's going to remember them.' I walked in the door and said, 'Remember what?' and of course I copped a mouthful for talking out of turn."
And as for any evidence to back up his claims?
Well, he insists that he underwent a procedure when he was 8 years old to change his eye color from blue to brown in an attempt to make him look less regal.
"I don't think that they had any choice but to do that," he said. "But it was because of the gossip in Portsmouth around the time. In those times, blue and blue made blue. There was never any inquisition about that."
"My oncologist will tell you that one of my lenses is perfectly round and one of them is oval-shaped like a football - a rugby football. This is why I have a vision problem."
Of course, the legitimacy of this "proof" is questionable, with Phillip pointing out that Holly's blue eyes don't make her related to the Queen.
And just when you thought his claims couldn't get any more scandalous...
Before Christmas I had a visit to the Federal Family Court in Brisbane to re-listen to the recording of my previous...Posted by Simon Charles Dorante-Day on Saturday, 26 December 2020
He has now alleged that Princess Diana had some knowledge of his existence.
Speaking again to 7NEWS, Simon said it is possible that the late princess may have stumbled across evidence that Charles and Camilla had a secret son after the breakdown of her marriage.
"We believe that Diana knew of my existence, that she had put together the pieces," he said. "Diana was at a point where she was finding out answers about her life, how she was wronged – and she was going public with it."
He claimed that one of "Diana's fears was a secret child."
"There were all sorts of rumours flying around, and my existence would've been one of them."
He even approached London's Metropolitan Police in relation to Diana's death.
"I sent a letter to the Metropolitan Police [in 2004] saying I believed I was Charles and Camilla's son and whether it would have any ramifications in the case about Diana's death... I was making submissions to the Paget Enquiry and as a result, Charles got questioned a second time during the enquiry, and it was after my letter was sent, and I believe this is why."
"Diana sadly died before I went public with my claims, so she was never publicly asked about me," he added.
"But I believe my birth and adoption was part of a royal cover-up. Through her investigations into Charles and Camilla, she would've heard the rumors of my existence and made inquiries. How could she not?"
Of course, the royal family is yet to address Simon's allegations.