The Australian actress, 72, and singer posted an adorable beach picture in which she’s wearing a swimsuit and carrying the tiny infant.
Olivia's daughter, Chloe Lattanzi - who is now 35 years old - was a tiny baby in the photo wore an adorable sun hat.
WATCH: Olivia Newton-John shares heartfelt Christmas message amid cancer battle
Her famous mum was smiling for the camera and looked overjoyed in the sweet image. Olivia shared the photo to tease an exciting new project with Chloe.
She captioned the post: "There’s nothing I love more than working with my daughter @chloelattanziofficial and we have something special coming your way in ONE week! Stay tuned for more details! #flashbackfriday."
The news she was waiting to tell fans was that the mother-daughter duo have recorded a new song together.
Olivia shared the sweet photo to tease exciting news
Their duet, Window in the Wall, will be released on 22 January.
The Grease star is currently battling stage 4 cancer but she continues to inspire her fans with her uplifting messages.
Just before the holidays, Olivia addressed the end of what was a difficult year for everyone.
Olivia is incredibly close to her daughter Chloe
In a video shared on Instagram, she said: "I just want to wish you all the happiest and healthiest holiday season. We'll get through this. This too will pass."
She added: "I hope that 2021 brings us new things and better news, and just keep your spirits up and think positive thoughts."
Olivia and Chloe are releasing new music together
Olivia has tried to find the positives during the ongoing COVID-19 pandemic and spoke to Australia’s Today show about spending more time at home with her husband John Easterling.
She said: "I feel great and I'm so grateful I'm able to be in the countryside. I have my animals and my husband. This has actually been one of the rare times in my whole life where I have been in one place for more than three weeks."
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