After Mackenzie Phillips’ startling revelation that she used to have consensual sex with her father, John Phillips, her half sister Chynna Phillips is speaking out on Oprah saying that her father never made a move on her. However Chynna did say that she believes her sister and she has known about their affair for awhile. Chynna is clearly the hotter sister, what was poppa John thinking?

Is this story true or not?

VERDICT: Epic – totally true! Watch the video here.