Dolly Parton has revealed she is "so sad" to have lost her "special friend" Olivia Newton-John, following her death aged 73.
The US country legend said she was "so happy that our lives crossed paths" as she joined those paying tribute to the actress and singer online.
The British-born singer died "peacefully" at her ranch in southern California on Monday morning, surrounded by family and friends, her widower confirmed.
After the news broke, famous names from the worlds of television, film and music took to social media to share memories and send condolences to her family.
"So sad to have lost my special friend Olivia Newton-John," Parton wrote in a statement.
"So happy that our lives crossed paths. I know her voice is singing beautifully with the angels.
"With Love, Dolly."
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Australian actress Delta Goodrem, who portrayed Olivia in a biopic called Olivia Newton-John: Hopelessly Devoted to You, recalled fond memories of the singer including a time they had met in New York when she was seven years old.
She also revealed that Olivia had sent her a "beautiful letter" from the star when she herself had been diagnosed with cancer years later.
"There was something about everything, every moment she was an example of what it was to be a role model… and lead in kindness," she told Australian news programme Sunrise.
"What she did for so many she continued to turn into this pillar of strength, this constant positivity and hope and that’s what people feel from her."
Source: Press Association