Actress Lisa Robin Kelly, who was known to most people as the promiscuous older sister on the Fox sitcom "That '70s Show," has died at age 43.
Kelly's agent, Craig Wyckoff, confirmed her death, saying that the actress had been dealing with her troubles with addiction at the time of her death, and had voluntarily checked into a California rehab facility on Monday. She apparently died in her sleep sometime Wednesday night.
"I spoke to her on Monday and she was hopeful and confident, looking forward to putting this part of her life behind her," Wyckoff said in a statement. "Last night she lost the battle. Cause of death has not been issued yet and no death certificate has been issued either."
Kelly's acting career never reached the heights of her fellow "'70s Show" costars Ashton Kutcher, Mila Kunis and Topher Grace. In recent years, she'd had several run-ins with law enforcement, most recently an arrest in June on suspicion of DUI after her car stalled on the 5 Freeway in Burbank.