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Olivia Newton-John has revealed she will be joining forces with John Travolta to mark the 40th anniversary of their hit film "Grease."

The pair shot to fame in the iconic 1978 film, which won a number of awards after its release.

Now 68-year-old Olivia has confirmed they will be reprising their roles as Danny and Sandy.

She told The Mirror: “We are thinking up ways... [We have] nothing to announce yet. Forty years anniversary of 'Grease,' which I can’t believe… Time goes so fast. It’s so exciting.”

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John, 63, has yet to comment, but he’s made no complaints about Olivia’s dream of getting them all back together.

It’s not the first time she’s admitted a reunion was in the pipeline, telling Holly Willoughby and Phillip Schofield: “I can’t believe it’s that long. I would like to do something special to help the hospital I work with, but I don’t know if we could get the rest of the cast together.”

The big celebration could be the last big performance Olivia does as she’s recently revealed she was hoping to put the brakes on her hectic work schedule.

She explained: “As time goes on, I think of having more time off.”

But it might not be that easy as the offers are flowing in thick and fast.

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Olivia said: “Every year for the last 20 years, I thought I was retiring and then somebody would say, ‘How about this?’ And it’s like, ‘Oh, that looks fun.'"

Since battling cancer in 1992, Olivia has dedicated much of her life to raising money for breast cancer research.

She’s since raised millions for charity after donating proceeds from her album sales.

Olivia told The Radio Times: “I am grateful for the experience because without it I would not have done many of the things I have done in my life. It’s taught me compassion for those going through difficult times.”

This article originally appeared in The Sun.