Singer George Michael has signed a multimillion-pound deal to pen a "no-holds-barred" autobiography, it has been announced.
HarperCollins said former Wham! star Michael, 44, would write the "access-all-areas" autobiography "entirely himself".
Publishers said the deal is "one of the biggest ever concluded in UK publishing", but would not divulge figures.
The book, dubbed "one of the hottest remaining untold celebrity memoirs", will cover the pop star's personal and professional life and will hit the shelves in autumn next year.
Michael's manager Andy Stephens said: "George has promised HarperCollins a no-holds-barred biography, and it's certain to be just that.
"People aren't stupid, they're beginning to notice that the truth is more interesting than the stories the press come up with."
Belinda Budge, managing director and publisher of Harper NonFiction UK, said: "This is an incredibly exciting publishing event.
"George is one of the best known and best loved pop singers in the world, with an extraordinary story to tell. I am particularly thrilled by this deal, as I have long been a fan of George's.
"Most importantly, this really will be a truly authentic book - and an exceptional one, as he's going to be writing it entirely himself."
The deal comes after Michael's greatest hits tour celebrating more than 20 years in pop.