Lisa Robin Kelly, the actress most well known for her role in sitcom That 70’s Show, has died in rehab. She was 43.

Kelly played Laurie Forman, the promiscuous older sister of lead Eric Forman (played by Topher Grace) in the sitcom which ran from 1998 until 2003. Kelly left the series in season 6, and was replaced by Christina Moore.

While her That 70’s Show co-stars Ashton Kutcher and Mila Kunis have made big names for themselves in Hollywood, Kelly’s life spiralled out of control in recent years, with the actress being arrested at least 4 times since 2010 for driving under the influence of alcohol, spousal abuse and assault. TMZ reports that she checked herself in to a California rehab facility on Monday after a dispute with her estranged husband, but succumbed to cardiac arrest in her sleep on Wednesday night and could not be revived. 

Kelly’s manager, Craig Wycoff, told FOX411 “Unfortunately Lisa Robin Kelly passed away last evening. Lisa had
voluntarily checked herself into a treatment facility early this week
where she was battling the addiction problems that have plagued her
these past few years… I spoke to her on Monday and she was hopeful and confident, looking
forward to putting this part of her life behind her. Last night she lost
the battle.”

Via TMZ