Prince Harry and Meghan Markle are reportedly planning something big for their son Archie’s fourth birthday, which happens to fall on the same day that King Charles III will formally rise to the throne.

The couple is said to be aiming to steal King Charles' thunder as they don't seem to sit quietly.

According to Barkjack, a Twitter posting duo and a favourite dispenser of tea, staff at Frogmore have been told to prepare for Archie's birthday celebration.

While there are speculations on whether Prince Harry will attend King Charles' coronation ceremony in May, reports suggest that he has already been written out of the script for the event.

The decision comes amid bombshell revelations in the Duke of Sussex's new book, where he made sensational claims about his brother and father.

Harry described the Prince of Wales as his arch-nemesis and accused the King of being worried he would be overshadowed by Meghan's Hollywood star power.

The royal family has so far remained silent on the matter, refusing to respond to the Duke's incendiary anecdotes.

However, the Sunday Times reported that a royal source claimed Harry has been omitted from the proceedings of King Charles' upcoming coronation.

Breaking with tradition, Charles will scrap royal dukes kneeling and pay homage to the monarch.

Only William will perform the role.

As things stand, there's no role for Harry in the service, a royal source reportedly declared.

Friends of William told the Sunday Times that the heir is burning with anger but is also anxious and sad over Harry's comments, which one friend described as cowardly.

However, William won't retaliate, as he never would because he's dignified and unbelievably loyal.

“It's cruel, cowardly and so sad for William to keep taking the punches.

He's keeping quiet for the good of his family and the country,” one friend said.

Another source added that William is anxious and sad, concentrating on his wife and children, and handling the situation well on the outside, while burning inside.

“He's not going to roll over,” a third associate chipped in.

It's believed that the Harkles won't be invited or attend the coronation after Harry directly attacked Camilla on the 60 Minutes interview.

Harry called Queen Camilla dangerous in his second TV interview of the night.

He also accused her of showing an open willingness to trade information with the press as she campaigned to marry Charles.

When asked why he referred to Camilla as dangerous in his book, Harry said, “because of the need for her to rehabilitate her image.

That made her dangerous because of the connections that she was forging with the British press.

And there was open willingness on both sides to trade information.

And with a family built on hierarchy and with her on the way to being Queen Consort, there was going to be people or bodies left in the street because of that.”

Earlier in the interview, he parroted claims of her being the other woman, adding, “she was the villain, she was the third person in the marriage.”

As for Archie's fourth birthday celebration, it's unclear what the couple has planned.

However, if it's anything like Lily's first birthday, it'll just be a cake and a bunch of flowers on a table.

It's unlikely that the kids will attend the coronation, as they would rather enjoy cake at home.

While some experts are claiming that the Sussexes are planning something big to overshadow King Charles III's coronation, it remains to be seen what they have in store.

In conclusion, tensions between Prince Harry and the royal family continue to rise as the Duke of Sussex's new book continues to make headlines.

With King Charles III's coronation approaching, reports suggest that Prince Harry has been written out of the script for the event.

Meanwhile, the couple is reportedly planning something big for their son Archie's fourth birthday, which happens to fall on the same day as the coronation.