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(NEXSTAR) – Singer, songwriter, actress, entrepreneur, and activist Olivia Newton-John has died at the age of 73, her husband John Easterling announced Monday.

Best known for her role as Sandy Olsson in “Grease,” Newton-John won four Grammys with five No. 1 hits, 10 top 10 hits, and two chart-topping albums in the 1970s.

Here is a look at Newton-John through the years, from her time on “Grease” to being made a dame – the female equivalent of a knight – for her singing, acting, and charitable work supporting cancer research.

Newton-John was well known for sharing her journey with breast cancer, serving as a “symbol of triumphs and hope for over 30 years,” Easterling wrote.

The Associated Press contributed to this report.