Olivia Newton-John's memorial with music from Delta Goodrem and John Travolta appearance

Olivia Newton-John 's memorial will take place this weekend and will include a special appearance by Grease co-star John Travolta.

The star passed away aged 73 in August 2022, after being diagnosed with cancer for a third time.

She was diagnosed with the illness three times in 1992, 2013 and, for a final time, in 2017.

Fans will get the chance to celebrate the life of Olivia at her state memorial.

Those who are attending have been asked to wear "a touch of orange" which was Olivia's favourite colour.

Channel Nine's David Campbell is hosting the memorial which will be a fitting tribute to the Grease star's sixty years as a recording star and actress as well as her work for cancer research.

Olivia and John Easterling married in 2008 (AFP via Getty Images)

The Herald Sun has published details ahead of the farewell, which will be held in Melbourne at Hamer Hall on Sunday.

Olivia's husband John Easterling, her daughter Chloe Lattanzi, and niece Tottie Goldsmith will be at the memorial and will present to a tribute.

Delta Goodrem will perform a medley of the star's hits and Prime Minister Anthony Albanese will be also among the guests.

While Olivia's Grease co-star John Travolta will join the event via video link.

John Travolta will appear via video link (TM & Copyright © 2002 by Paramount Pictures. All Rights Reserved.)

Fans will also hear singer Bumpy perform a song by Olivia called Grace and Gratitude.

Olivia's health and charity service will be recognised by tributes from Professor Mattias Ernst, and Debbie Shiell, from the ONJ Cancer Wellness and Research Centre.

The Australian national anthem will be performed at the memorial by the Christ Church Grammar School Choir and Aunty Di Kerr will conduct the Welcome to Country.

The memorial will be available to watch on Channel Nine, Channel Seven and the ABC who are all broadcasting the service.

Olivia passed away in August 2022 (Getty Images)

Nine will broadcast the event nationally on their main channel and 9Now while, Seven will screen the memorial on their main channel for viewers in Victoria.

Seven News presenters Mike Amor and Rebecca Madden will host the broadcast, which will also be streaming on 7plus.

While the ABC will screen the event on their ABC News channel and Iview platform from 4pm.