Olivia Newton-John died quietly at her Southern California ranch Thursday morning.

Olivia's breast cancer story has been an inspiration for over 30 years.

In September 2018, the singer confirmed she had spine cancer.

It was her third cancer diagnosis, after early '90s and 2017 breast cancer.

By the late 1970s, Newton-John was a prominent country and soft-rock singer.

Her appearance with John Travolta in 1978's "Grease" propelled her to popularity.

Even though Newton-John had little acting experience, her role as Sandy was unforgettable.

Their chemistry as mismatched lovebirds who undergo final-act makeovers

Newton-John was born in England in 1948 and relocated to Australia at age 5.

In 1966, Newton-John had her debut single in England and went on to have some success abroad.