“I don’t know if I’ve known a lovelier human being,” she began.
“Olivia was the essence of summer – her sunniness, her warmth and her grace are what always come to mind when I think of her.
“I will miss her enormously,” she added in her tear-jerking statement to People.
John Travolta, who played Sandy’s love interest Danny Zuko, also penned: “My dearest Olivia, you made all of our lives so much better.
“Your impact was incredible. I love you so much. We will see you down the road and we will all be together again.
“Yours from the first moment I saw you and forever! Your Danny, your John!”