Author Jenny Paul has spent six years researching the tome about the world's most fascinating couple, and she's convinced she has the goods on the couple's private worlds when they met on the set of Mr & Mrs. Smith in 2004.
She tells Life & Style magazine that she has unearthed details of Jolie's sexual liaisons around the time of her first Pitt meeting and claims she was dating ex-husband Jonny Lee Miller and actor Ralph Fiennes.
But it's Paul's claims linking Jolie to Jagger that are sure to shock more than any other facts in the book - the author claims Jolie slept with Jagger around the time she appeared in the 1997 Rolling Stones video for Anybody Seen My Baby.
Paul lists the former boyfriend of Jolie's late mother Marcheline Bertrand and the actress' old confidante Texas Terri among her sources.
The author tells Life & Style, "Hollywood will be rocked by these revelations about Brad and Angelina."
Brad Pitt and Angelina Jolie: The True Story also features revelations about the couple's expanding family - Paul claims the pair plans to have 13 children.
She says, "Some will be adopted, some will be biological."
Jolie's representative had not returned WENN's request for comment by press time.