The service however will be more of a "concert" rather than a traditional ceremony, celebrating her music and life, Andrews said.
"The family was quite touched at the prospect of Victorians being able to come together and celebrate Olivia's life."
The Melbourne-raised performer died at her ranch in Southern California surrounded by family and friends on Tuesday, aged 73.
After surviving cancer in 1992 and again in 2013, it returned in 2017 and on August 9, 2022, the Grammy-award winning singer lost her battle with spinal cancer on Monday.
Newton-John's husband John Easterling paid tribute to the beloved actress overnight.
"Our love for each other transcends our understanding," he said in a post on Instagram post.
"Every day we expressed our gratitude for this love that could be so deep, so real, so natural. We never had to 'work' on it.
"We were in awe of this great mystery and accepted the experience of our love as past, present and forever.
"At Olivia's deepest essence she was a healer using her mediums of song, of words, of touch."