Newton-John was born in Cambridge, but her family later emigrated to Australia, where her father Brin worked as the master of Ormond College at the University of Melbourne.
He had earlier served as an MI5 officeron the Enigma project at Bletchley Park, and took Rudolf Hess into custody during the Second World War.
Newton-John returned to the UK as a teenager to pursue a singing career and starred in the Eurovision song contest in 1974.
Her big break in Grease came four years later. She famously resisted the part, at first turning down producer Alan Carr because, she told The Telegraph, she thought she was too old for the role of a high school teen at the age of 27.
She is survived by her daughter Chloe Rose, 36, who posted a tribute to her mother on Instagram three days ago. “I worship this woman. My mother. My best friend,” the actor-singer wrote.
‘You made all of our lives better’
The entertainment world is mourning the loss of the beloved star, who has been hailed as “angelic voice” who produced “stone cold classic” songs.
In a heartfelt tribute on Instagram, her Grease co-star John Travolta said she made “all of our lives so much better”.
“Your impact was incredible,” he said.
“I love you so much. We will see you down the road and we will all be together again. Yours from the first moment I saw you and forever! Your Danny, your John!”