The Lethal Weapon 2 star, whose fourth marriage to DJ Jeremy Healy fell apart in February (10), had put pen to paper for the tome to document her colourful life.
But Kensit has cancelled plans to release the book for the sake of her 10-year-old son Lennon, by Oasis star Gallagher, according to Britain's Mail on Sunday.
A source tells the publication, "The publishers wanted all the juicy details about their marriage and why it broke down and Liam said he didn’t think it was right that Lennon should have to read that when he’s older.
"Patsy had high hopes for the book and it was a real warts-and-all account, but she has agreed to shelve it for the time being."
Kensit has enjoyed a series of rock 'n' roll husbands - she married Gallagher at the height of his Oasis fame in 1997, after her failed marriages to Big Audio Dynamite star Donovan and Simple Minds singer Kerr. She also has a teenage son, James, 16, with Kerr.