Ed Sheeran and Princess Beatrice made headlines around the world last year when the singer claimed his face was slashed during a mock-knighting by the princess.
But James Blunt, who was present at the party, has revealed the whole story was a lie.
"Ed was drunk, messing around, and he cut himself. We made a fancy story up; people fell for it. It was very embarrassing," he told ShortList.
Read more: Princess Beatrice slices Ed Sheeran's face with sword