Olivia Newton-John’s niece gives health update following 'days to live' rumours
"Just giving you the heads up that Livvy is in good health, so let's leave that distressing rumor where it belongs", Goldsmith wrote alongside a red carpet photo of the two, adding a butterfly emoji.
News site radaronline.com reports Newton-John is determined to survive long enough to see her only child Chloe Lattanzi marry her partner James Driskill.
Newton-John was diagnosed with breast cancer in the early 1990s and was again diagnosed in 2013, which was in her shoulder.
The Grease actress was diagnosed with breast cancer for the third time in 2017, with a tumour being found on the base of her spine after the breast cancer metastasized to her sacrum.
Some Australian media outlets seized on the unconfirmed reports, sparking a frenzy of activity on social media from her anxious fans.
"I'm doing great", she continued, "and I want to wish all of you the happiest and healthiest 2019 that's possible, and I thank you all for your wonderful love and support - for me, and for my Olivia Newton-John Cancer Wellness Centre in Melbourne, Australia".
Newton-John's manager, Michael Caprio, has dismissed the rumors as "hilarious".
"I'm very lucky that I live in a state where it's legal and that I have a husband that is a plant-medicine man".
"My dream is that, in Australia soon, it will be available to all the cancer patients and people going through cancer that causes pain".
Explaining why she didn't reveal her second battle, she said: 'I thought, "It's my life", and I just made a decision to keep it to myself'.
Olivia gained worldwide fame after her part as Sandy in Grease, alongside John Travolta. "I'm treating it naturally and doing really well".
But those close to the singer have denied the claims.
"I'm one of millions in this fight, in this journey", Newton-John told Australian news program Sunday Night in September.