Nicole Kidman and Delta Goodrem are at war over an Olivia Newton-John movie!

They both want to play the late Grease star in a biopic.
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Nicole Kidman is protective of her loved ones – and her dear friend, the late Olivia Newton-John, is chief among them.

Whispers are circulating in Hollywood that a secret ONJ biopic could be in the works. What’s more, Nicole, 55, is reportedly insisting that she’s the only person who can do the singer, who passed away at 73 last August after a decades-long journey with cancer, justice.

WATCH: Nicole Kidman surprises Hugh Jackman with sweet gesture

But there’s a young starlet by the name of Delta Goodrem who might have something to say about it all.

Not only has Delta, 38, played Olivia in a previous TV production, Olivia Newton-John: Hopelessly Devoted to You, but the singer was front and centre at the Grease icon’s State Memorial on February 26.

In front of a star-studded crowd at Melbourne’s Hamer Hall – which included Olivia’s daughter Chloe Lattanzi and widower John Easterling – Delta performed a medley of Olivia’s hits to great acclaim.

“I deeply loved Olivia, the woman and the icon,” an emotional Delta told one reporter on arrival.

nicole kidman
According to insiders, Nicole Kidman wants to play ONJ in a biopic. (Credit: Getty)

Having battled cancer herself, she added: “Our soul was brought together through music – as well as our health journey – but it was singing with her that was the thing we both loved so much.”

Now, one source tells us: “If a shiny Hollywood biopic starring Nicole gets the green light, spare a thought for poor Delta.

“Delta knows she’ll be compared to Nicole until the end of time, which is going to be hard to take.”

“In a way, Delta’s miniseries was much harder to pull off because Olivia was still alive and made it clear she wasn’t happy about it.”

WATCH: Delta Goodrem’s tribute performance for Olivia Newton-John

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Indeed, despite sharing a close, mentor-like friendship with Delta, Olivia reportedly refused to watch the two-part miniseries back in 2018. However, she remained very kind to Delta about it, even if critics and fans didn’t really rate the project.

“That was one of Delta’s toughest jobs of her career and now she’s worried it’s going to look second-rate compared to whatever Nicole comes up with,” says the source.

Delta knows Nicole via her husband, Keith Urban, with the pair working together on The Voice Australia. Sources say she has half a mind to call Nicole up and plead her case for her not to go through with her plans – although it will likely fall on deaf ears.

“If Nicole decides to play Olivia, there’s nothing Delta can do about it. Put a blonde bobbed wig on Nicole and she looks like Olivia, plus she has an amazing singing voice,” adds the insider.

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But Delta Goodrem also wants the role! (Credit: Getty)

“Nicole and Olivia were friends, so playing her will likely be emotional. But she’s convinced she’s the only one who can do her justice and protect her memory.”

“She knows that if she doesn’t play her, someone else might, and she doesn’t want to run that risk.”

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