“The clash of dates has annoyed Prince William,” our source says. “This isn’t the first time something like this has happened, and he just doesn’t understand why Meghan feels the need to ‘crash her car’ into Kate quite so often. Going up on anything, against the future Queen of England never ends well for her.”

As for Meghan’s own husband, the Duke of Sussex, our insider says Prince Harry “is exasperated”, adding, “This was an easily avoidable issue, but Meghan’s made it into a clash with Kate yet again”.