CHICAGO -- Former child star Mackenzie Phillips said Wednesday her father, John Phillips, who was a leader of the 1960s pop group the Mamas and the Papas, raped her when she was a teenager and that her sexual relationship with him later became what she termed "consensual."

Mackenzie Phillips writes in her new book, "High on Arrival," that she had sex with her father on the night before she was to get married in 1979 at age 19, according to People magazine.

Phillips wrote in her book: "I woke up that night from a blackout to find myself having sex with my own father."

She told "The Oprah Winfrey Show" in an interview that aired Wednesday that her siblings "definitely have a problem with this." Winfrey also read a statement from Genevieve Waite, John Phillips' wife at the time of the alleged abuse and Mackenzie's stepmother that said he was "incapable, no matter how drunk or drugged he was, of having such a relationship with his own child."

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