Meanwhile, Stockard Channing, who played Rizzo in the classic movie musical, shared a statement to The Hollywood Reporter in which she said she’d never “known a lovelier human being”.

“Olivia was the essence of summer,” she said. “Her sunniness, her warmth and her grace are what always come to mind when I think of her. I will miss her enormously.”

Dinah Manoff, who played Marty – another of the Pink Ladies – told People, “As many will tell you, Olivia Newton-John was one of the kindest, most generous souls ever to grace the earth, and I was one lucky Pink Lady to have spent time with her during the filming of Grease.

“She brought light and laughter wherever she went. My deepest condolences to her family and friends during their time of great loss.”

And the film’s director Randal Kleiser said, “I’m heartbroken. She was one of a kind, and so very kind.

“For over four decades of our friendship she exuded nothing but love to everyone she met. Olivia was exactly the way you imagined her. I will miss her forever.”

Several other big names have also joined in the tributes, including Australian Prime Minister Anthony Albanese, Star Trek legend George Takei and pop icon Kylie Minogue.

“Since I was 10 years old, I have loved and looked up to Olivia Newton John,” the latter wrote on Twitter. “And, I always will.

“She was, and always will be, an inspiration to me in so many, many ways. My deepest condolences to her family and loved ones. x ONJ4EVER.”

Since I was ten years old, I have loved and looked up to Olivia Newton John. And, I always will. (Just like this picture @nfsaonline) She was, and always will be, an inspiration to me in so many, many ways. My deepest condolences to her family and loved ones. x ONJ4EVER pic.twitter.com/3nE8PVDFLy

— Kylie Minogue (@kylieminogue) August 8, 2022