"Grease" star dead at age 73.
Singer and actress Olivia Newton-John has died at the age of 73.
According to her husband, she died at her southern California ranch this morning.
The star had battled breast cancer for over thirty years.
She is best known for her role in the movie "Grease" and her music career.
The biggest hit of her career was "Physical" which hit #1 in 1981, and stayed at the top of the charts for ten weeks.

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