Rose Hanbury, who is rumoured to be Prince William's mistress, will attend the coronation of King Charles III, an appearance that could cause some tension among the Royal couple.

The coronation of King Charles III will take place on Saturday May 6 at Westminster Abbey.

The coronation will be one of the most important events of the century as it marks the beginning of a new era after more than 70 years of rule of Queen Elizabeth II.

Media providers across the world will be following every detail of the ceremony as it unfolds, especially as there could be some controversial moments to capture.

One of the most anticipated moments will be the arrival of Rose Hanbury, who is alleged to be Prince William's mistress.

Various images published to social media seem to confirm this speculation as they claim to show Rose and the Duke of Cambridge kissing.

Such infidelity was confirmed by Prince Harry in his book Spare.

Hanbury to attend King's coronation after one of her son's takes on important role

King Charles III has insisted that Hanbury attends the coronation and has given her son, Oliver, an important role as his page.

Kate Middleton's sons will also feature as pages, meaning both Kate and Rose will be stationed in a similar circle.

Rose will likely attend not only because she is the wife of David Cholmondeley, 7th Marquess of Cholmondeley, who has been named Lord-in-Waiting to King Charles, but also because her son, Oliver, will be in charge of holding the king's robes, along with Prince George.

"There has never been any enmity between Kate and Rose. The rumors were all a load of rubbish. The family are ancient allies of the Crown and they will be there," a family friend revealed to 'The Daily Beast'.

Another friend of the royals told the same media outlet that it would be "unimaginable" that David Cholmondeley would not be at the coronation with his wife.