7. Zac Efron
Zac Efron revealed he went to rehab in 2013.
8. Gerard Butler
Gerard Butler did a stint at Betty Ford in 2012.
9. Kim Richards
Real Housewives of Beverly Hills star Kim Richards checked in in 2011 to deal with issues with alcohol.
10. Kelly Osbourne
Kelly Osbourne admitted in 2013 that she has gone to rehab seven times.
11. Mischa Barton
Mischa checked into rehab following a public DUI. Her career went downhill fast after The OC.
12. Elizabeth Vargas
We send Elizabeth Vargas our best wishes. In August 2014, the ABC reporter checked back into rehab.
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