Meghan Markle's decision to guest-edit the September 2019 issue of Vogue UK allegedly prompted an "explosive" argument between Prince Harry and Prince William.
A new biography claims that the 'Forces of Change' issue of the magazine - which featured Jacinda Ardern and 14 other influential women on the cover - was too "woke" for the Royal Family's liking, and they believed it lacked political neutrality.
Per the Mirror, an excerpt from author Robert Lacey's new book Battle of the Brothers alleges that Prince William attempted to talk to his brother Prince Harry about Meghan's involvement, which ended in a furious "showdown".
Lacey, who is a consult on Netflix's royal series The Crown, writes that the argument became "another classic Harry explosion, followed by a further, even deeper rift" between the siblings.
Rumours of discontent between Harry and William have been rife since Meghan entered the royal family. Harry addressed his relationship with William in a documentary that aired last year, saying the brothers were "on different paths".
"We are brothers. We will always be brothers," he said.
"We are certainly on different paths at the moment but I will always be there for him as I know he will always be there for me.
"The majority of the stuff is created out of nothing but as brothers, you know, you have good days, you have bad days."