Lisa Robin Kelly, who played Topher Grace's big sister on That '70s Show, has died. She was 43.
The actress, who had a long history of substance abuse and legal issues, reportedly went into cardiac arrest Wednesday night at a California rehab facility.
Her agent told TMZ that Lisa had "voluntarily checked herself in for treatment for an alcohol problem this past week and was determined to clean herself up." The agent added, "She had been fighting demons for a while -- and finally lost her battle."
Lisa was arrested at least four times in the past three years for DUI, spousal abuse and assault.