Prince William and Prince Harry's relationship has been infamously strained for months now. The rift is such an issue among the royal family that it's the subject of an upcoming book from famed royal historian and biographer (and official consultant on Netflix's The Crown) Robert Lacey.
Lacey's book, Battle of Brothers: William and Harry – The Inside Story of a Family in Tumult, is due out later this month and is reportedly based on "countless" interviews the biographer conducted with insiders about the princes' feud.
In a new portion of the book serialized in the Daily Mail, Lacey reveals that things were so bad between the brothers amid Harry's royal exit with his wife, Meghan Markle, that Will turned down a family lunch invitation from.
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