Grease co-star John Travolta leads celebrity tributes to legend Olivia Newton-John after she dies aged 73
JOHN Travolta has shared a heartfelt tribute to his Grease co-star Olivia Newton-John following her death aged 73. The 68-year-old said they would be "together again soon" as he praised the legendary actress. Olivia - who played iconic character Sandra Dee in the 1978 film - died following a 30-year battle with breast cancer.