Olivia Newton-John, actress and musician, has died at the age of 73.
Her husband posted Monday to her Instagram page that she died peacefully this morning at her ranch in California.
"Olivia has been a symbol of triumphs and hope for over 30 years sharing her journey with breast cancer," John Easterling wrote. "Her healing inspiration and pioneering experience with plant medicine continues with the Olivia Newton-John Foundation Fund, dedicated to researching plant medicine and cancer."
Newton-John was first diagnosed with breast cancer in 1992 and spent her later years advocating for cancer patients and survivors. TMZ is reporting her cause of death as metastatic breast cancer.
She was one of the biggest pop stars of the 1970’s and obtained a new level of stardom when she co-starred in 1978’s Grease with John Travolta.
The biggest hit of her career came in 1981 with Physical.