When Mackenzie Phillips alleged in her book, "High On Arrival," that she and her father, John Phillips, had a 10-year sexual relationship, her former stepmother, Michelle Phillips, and half-sister, ...

Mackenzie Phillips says she had sex with her dad NEW YORK (AP) - Mackenzie Phillips reveals she had a sexual relationship with her father, John Phillips, a member of the '60s Mamas and the Papas band.

/*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 ...

Actress Bijou Phillips is shooting down her half-sister Mackenzie Phillips' allegations that their father, Mamas and the Papas leader John Phillips, sexually abused her. "When I was young my sister ...