britneybook.com CompositeBritney Spears' memoir is coming out soon, but only a part of the story is going to be told in her voice when it comes to the audio version -- the rest will be handled by a surprise celeb guest ... TMZ has learned.
Sources connected to the publisher of "The Woman in Me" tell TMZ ... Britney has already recorded the voice-over folks will hear when they buy the audiobook, but we're hearing she only recorded herself narrating a portion.
audible.comWe don't know how much she recorded, but we've been told she did not narrate any chapters having to do with her family -- and, presumably, much of the book will cover that topic. Our sources say she didn't record audio for those sections because she found them too painful to retell in her own words.
So, as a remedy ... another celeb was tapped to record the rest of 'TWIM' -- which comes out on Oct. 24 -- although it's unclear who was on the mic. Our sources tell us the publisher was really pushing for Reese Witherspoon to pick up the baton, but she wasn't available to do it.
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