John Travolta and More React to Olivia Newton-John's Death: "Made All of Our Lives So Much Better"

The "Grease" actor paid tribute to his costar in an Instagram post captioned, "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!"