Phillips tell Oprah that she had sex with her father John Phillips.

"I had sex with my own father," the website quotes her as saying. She says he shot her up with drugs and raped her. When she confronted him about it, she writes in her memoir, she said "We have to talk about how you raped me." He responded, "You mean when we made love?"

John Phillips passed away in 2001.

Phillips book, "High on Arrival," hits stores this week.

Read more at: http://www.huffingtonpost.com/2009/09/22/mackenzie-phillips-oprah_n_294479.html