20 Celebrities Who Have Battled Addiction In Rehab

14. Nicole Richie

Robert Downey Jr
Dennis Van Tine/PA Archive

The former best friend of Paris Hilton is certainly no stranger to rehab. She entered rehab in 2003 after she was caught using heroin and then again in 2007 for weight and prescription pill issues.

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Student of film. Former professional wrestler. Supporter of Newcastle United. Don't cry for me, I'm already dead...