Sadly, this is no surprise.
Lisa Robin Kelly -- who played Eric Forman's older sister on "That '70s Show -- has died ... TMZ has learned.
The 43-year-old actress passed away in her sleep Wednesday night in California.
Kelly had been in a downward spiral for the past couple of years -- she was arrested at least 4 times in the past 3 years for DUI, spousal abuse and assault.
Follow TMZ for more on this as it develops.