2. Mackenzie Phillips
Mackenzie is the daughter of Mamas & Papas singer, John Phillips. She has had a lifetime issue with drug abuse. In 2008, she was arrested by police at the Los Angeles Airport on charges of possession of both cocaine and heroin after she failed to make it through airport security screening. Phillips was charged with one felony count of cocaine possession. She was sentenced to a drug rehabilitation program. All charges were dismissed after she successfully completed the program.
In 2009, Phillips published her memoir titled High on Arrival. In the book she says that she first tried cocaine when she was 11-years-old and that her famous father had taken drugs with her. She said her father had even injected her with cocaine. In a shocking revelation, Phillips says that at the age of 19, on the night before her first wedding, she woke up from a blackout to discover that she was having sex with her father. Phillips added that eventually it became a consensual relationship.