Rehab's the Thing

Mischa Barton's 19-year-old little sister, Hania Barton, has checked herself into rehab to deal with an addiction to painkillers. Celebritybabylon.com reports that a family source claims Hania was going down the wrong path and wanted to fix her problem before it got worse. Kids these days I tell you! I need rehab now! Do they have rehab for an addiction to eating Twinkies? If so, I need that. Anyway, Hania totally looks like Rosanna Arquette....right now. That's not a good thing. 19 going on 50.