FILE – Actress and singer Olivia Newton-John attends the 2018 G’Day USA Los Angeles Gala in Los Angeles on Jan. 27, 2018. Newton-John, a longtime resident of Australia whose sales topped 100 million albums, died Monday at her southern California ranch, John Easterling, her husband, wrote on Instagram and Facebook. She was 73. (Photo by Richard Shotwell/Invision/AP, File)

By HILLEL ITALIE AP National Writer
NEW YORK (AP) — Olivia Newton-John, the superstar singer who was everyone’s favorite Sandy in “Grease,” has died. She was 73 and her husband said she died Monday at her California ranch. Newton-John reigned on pop, country, adult contemporary and dance charts with record sales that topped 100 million. Her fast-stepping duet with John Travolta “You’re the One That I Want” and the bouncy, R-rated smash “Physical” were some of the era’s biggest songs. She had 14 top 10 singles just in the U.S. and won four Grammys. Her husband said she was a symbol of hope after sharing her journey with breast cancer.