A heartfelt remembrance of John Travolta's late Grease co-star Olivia Newton-John has been posted online.

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The actor posted about Olivia's demise on social media this evening alongside Barbra Streisand, Kylie Minogue, Rebel Wilson, and many other well-known people.

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John praised Olivia's amazing effect and promised to see her "down the road," alluding to their respective characters from the 1978 smash musical movie.

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John Easterling, Olivia's husband, released a note on Olivia's Facebook page earlier today to share the terrible news of her passing.

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This morning [Monday, August 8], the actress who played Sandy in the popular musical film Grease passed suddenly at her ranch in Southern California.

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Within minutes of Olivia's passing becoming known to the world, John posted a photo of the late actress on Instagram to pay tribute to her.

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"Olivia, you have greatly improved all of our lives. Your influence was extraordinary, "John composed.

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"I adore you a lot. When we are all back together, we will see each other again. From the first minute I saw you, you were all mine.

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Olivia's passing occurs just two years after the actress and her former co-star John got back together to pay homage to their iconic Grease roles, an event that sparked fans' nostalgia.

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