She's the beloved Australian entertainer who is currently battling her breast cancer for a second time.

And Olivia Newton-John revealed that her husband, John Easterling, had been growing medicinal marijuana for the Grease star to help her cope with the pain.

In an emotional interview with Karl Stefanovic on 60 Minutes on Sunday, Olivia revealed that the controversial plant has helped her immeasurably in her cancer battle.

Olivia Newton John revealed on 60 Minutes that her husband, John Easterling, had been growing medicinal marijuana for the Grease star to help her cope with the pain of battling cancer

'My husband's a plant medicine man so he grew cannabis for me and made tinctures for me to take for pain and inflammation and so many other things that cannabis can do,' Olivia said.

''It's been a maligned plant all these years and it really is a magical miracle plant.'

When Karl asked the Grease star what difference the herb had made in her life, she said using marijuana was a 'no brainer.'

Herbal help: 'My husband's a plant medicine man so he grew cannabis for me and made tinctures for me to take for pain and inflammation and so many other things that cannabis can do,' Olivia admitted. Olivia is pictured with John and daughter Chloe Lattanzi

'It helped me a lot with pain, because, you know, I dont like taking prescription drugs, so it's kind of a no-brainer,' she said.

'It's kind and it's compassionate. It's what should be available for everybody to use.'

Despite being adamant that she was staying positive in the face of adversity, Olivia became teary-eyed when asked about how the diagnosis has affected John and her daughter Chloe Lattanzi, 31.

Alternative: 'It helped me a lot with pain, because, you know, I don't like taking prescription drugs, so it's kind of a no-brainer,' she told Karl Stefanovic

Karl asked the star: 'How was it to tell Chloe? How was it to tell you family.'

Fighting back tears, Olivia replied: 'Well, that wasn't easy, but I did deliver it in a positive way, of course.'

Earlier this month, she spoke for the first time about the importance of medical marijuana in her treatment and why Australia needs to take California's lead.

Marijuana treatment: Earlier this month, she spoke for the first time about the importance of medical marijuana in her treatment and why Australia needs to take California's lead

'It’s an important part of treatment, and it should be available,' the Grease star told The Daily Telegraph.

The actress, who learned in May that breast cancer had returned and metastasized to her lower back, insisted the natural remedy is working wonders.

Olivia also praised California's steps to legalise cannabis, making obtaining it far easier than in back home in Australia.

It also helps that her daughter, Chloe Lattanzi, grows the divisive substance on a farm in Oregon.

'I use medicinal cannabis, which is really important for pain and healing... 'It’s a plant that has been maligned for so long, and has so many abilities to heal,' she said.