Olivia Newton-John plans to auction off iconic high-waisted pants from 'Grease'

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Actress Olivia Newton-John visits the Broadway cast of "Grease."

"Grease" is still the word for Australian singer Olivia Newton-John.

The film turns 40 next year and enjoyed a big resurgence when Fox aired a live re-imagining of the musical last year, but its popularity never really went away. 

Newton-John says that people still talk to her about the movie and she plays four songs from its soundtrack in her live shows.

Newton-John plans to auction off the iconic high-waisted leather pants she wore in the final scene of "Grease" next year. The money will go to the cancer research center named for her in Australia.

According to the singer, she hasn't been approached to do anything special for the "Grease" anniversary yet, but she says wearing those pants again is out of the question.

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