The cause of death for 'WKRP in Cincinnati' star Loni Anderson has been revealed. She died at age 79 on Aug. 3, just days before her 80th birthday.

Loni Anderson, twice Emmy-nominated star of WKRP in Cincinnati, died of a rare form of cancer, according to a death certificate obtained by TMZ.

Loni Anderson’s cause of death has been confirmed as a rare and aggressive form of uterine cancer that occurs in just 6 out of 1 million women in the U.S. each year.