Actress Lisa Robin Kelly, who played Laurie Forman from "That 70's Show," passed away while in rehab Wednesday. 

Lisa checked herself in on Monday to fight her addictions. 

A source said that Lisa's most recent fall off the wagon came after a huge fight with her estranged husband Robert Gilliam.   He spent 35 days in jail for assaulting her this past May.  She filed for divorce last month.

Lisa's had her own run with the cops too.  She's been arrested a buch of times over the past few years for DUI, spousal abuse and other offenses. 

Here's a clip from when Lisa played Topher Grace's sister on "That 70's Show."