'One Day at a Time' star Mackenzie Phillips has made shocking revelations in a new memoir, claiming that she and her father carried on a 10-year incestuous relationship. The actress says that she broke off the relationship with her dad, The Mamas and the Papas singer John Phillips, when she became pregnant; Phillips told Oprah Winfrey, "I was in a relationship with my son's father as well... I did not know who the father was. The implications, the reality of that... I had an abortion and I never let him touch me again."

Not true, say two of John Phillips' ex-wives. According to an Access Hollywood report, both Genevieve Waite Phillips and Michelle Phillips condemn the allegations as pure fiction.