Olivia Newton-John and Delta Goodrem 'no longer on speaking terms' as Grease legend 'is doing everything in her power' to halt production on new biopic 

They're two of Australia's most beloved sweethearts, but Delta Goodrem and mentor Olivia Newton-John are reportedly at loggerheads over a forthcoming biopic. 

Delta is set to play the part of Olivia in an upcoming drama about the veteran star, but according to New Idea, the 67-year-old is doing 'everything in her power' to shut the project down.

On Monday, the magazine reported that the legendary star has even issued the production company with a cease and desist letter in a bid to halt the making of the film.

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Shots fired! Olivia Newton-John is reportedly doing 'everything in her power' to halt the production of biopic starring Delta Goodrem

Shots fired! Olivia Newton-John is reportedly doing 'everything in her power' to halt the production of biopic starring Delta Goodrem

'(Olivia's) very upset and is not taking (Delta's) calls,' the insider said. 'She expects Delta to publicly disassociate herself from the movie before she'll talk to her again.'

Daily Mail Australia has reached out to Delta and Olivia's management for comment. 

The former Neighbours star has often looked up to the Physical singer, saying she was keen to follow in her footsteps.

'She expects Delta to publicly disassociate herself from the movie': Sources say Olivia is not speaking to Delta until she backs down from the project that will have Delta play the role of the Grease star

'She expects Delta to publicly disassociate herself from the movie': Sources say Olivia is not speaking to Delta until she backs down from the project that will have Delta play the role of the Grease star

Mentor: The former Neighbours star has said that Olivia has been and 'incredible guiding light' for her throughout her career 

Mentor: The former Neighbours star has said that Olivia has been and 'incredible guiding light' for her throughout her career 

Ruffled feathers? New Idea reported on Monday that the legendary pop star has even issued the production company with a cease and desist letter in a bid to halt the making of the film

Ruffled feathers? New Idea reported on Monday that the legendary pop star has even issued the production company with a cease and desist letter in a bid to halt the making of the film

'Olivia's been an incredible guiding light with me,' she told Reuters in 2008.

'She's always given me really great advice... She's beautiful and we have a beautiful friendship.'

The production, for which casting is 'well-advanced', follows the success of other recent biopics centered on INXS' Michael Hutchence and performer Peter Allen. 

Getting the green light: Channel Seven have recently confirmed an up-coming biopic about the legendar Australian actor Paul Hogan

Getting the green light: Channel Seven have recently confirmed an up-coming biopic about the legendar Australian actor Paul Hogan

Iconic: The project is set to be a 'celebration of an Australian icon'

Iconic: The project is set to be a 'celebration of an Australian icon'

Recently, it was announced that Channel Seven had been given the green light to produce a biographical miniseries on iconic Australian actor Paul Hogan.

Seven's head of drama Julie McGauran told AAP: 'The Paul Hogan project will be a celebration of a beloved icon; an Aussie battler with a larrikin heart who experienced an unexpected, unprecedented rise to international stardom.' 

The script will be written by Keith Thompson (The Sapphires) and Marieke Hardy (Packed To The Rafters, The Family Law) for the FremantleMedia Australia (FMA) production.

FMA director of drama and executive producer, Jo Porter, said writers, Hardy and Thompson, were the perfect combination of creative talent to explore the man who helped define Australia's identity.

Out now: The latest issue of New Idea hit stands on Monday

Out now: The latest issue of New Idea hit stands on Monday

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