Mackenzie Phillips Reveals Shocking Sexual Affair With Famous Father

“One Day At A Time” star Mackenzie Phillips had a turbulent upbringing full of drug and alcohol abuse, not to mention pressure of living in her famous father’s shadow. John Phillips of the Mamas And The Papas had addiction problems of his own and theirs was obviously a dysfunctional relationship, but Mackenzie has only now just revealed JUST how dysfunctional it was: the father and daughter had an incestuous affair.

Our mind was blown when we heard this – it’s all in Mackenzie’s upcoming tell-all entitled “High On Arrival” – and it just seems too horrible to be true. In an excerpt from the book, Phillips writes, “My father was not a man with boundaries. He was full of love, and he was sick with drugs. I woke up that night from a blackout to find myself having sex with my own father.”

She explained that both of them were incredibly high and she doesn’t actually recall how many times this kind of thing may have happened – we can’t even fathom this, nor can we fathom that even once they both entered rehab, they continued to have an affair. Normally we (obviously) love juicy celeb gossip but this story deosn’t sit well with us at all, we’ve basically been in holy sh*t! mode since we heard it. However, if you’re anxious to know more, the book is out now. [People. Photo: GettyImages]