After being arrested for heroin possession, Nicole Richie went to rehab in 2003. Four years later, though, she plead guilty to driving under the influence of marijuana and Vicodin. "People ask me, do I blame Hollywood or my parents?" the 29-year-old mother of two told In Style U.K. in 2010. "No, I don't blame my parents. It had nothing to do with them. I created it and manifested it, and I got myself through it with the help of a lot of great people."
Perhaps the most infamous child star addict, Drew Barrymore started drinking at 9 years old, smoking pot at 10, and using cocaine at 12; she went to rehab the following year. Barrymore chronicled her troubles in her autobiography Little Girl Lost, published at age 14. Now, at 36, Barrymore, who co-founded Flower Films production company in 1995, says she strives for balance in her life. “I’m not [completely sober],” she told Parade magazine in 2009. “And I don't claim to be — quite the opposite. I've tried to find the balance.”