Olivia Newton-John , Dead at 73.<br />According to an Instagram post <br />made by her family, the 'Grease' actor died <br />"peacefully at her Ranch in Southern California... <br />surrounded by family and friends" on Aug. 8. .<br />She had battled breast cancer <br />for over 30 years. .<br />We ask that everyone please respect the family’s privacy during this very difficult time. Olivia has been a symbol of triumphs and hope for over 30 years sharing her journey with breast cancer, Olivia Newton-John's family, via Instagram.<br />Her healing inspiration and pioneering experience with plant medicine continues with the Olivia Newton-John Foundation Fund, dedicated to researching plant medicine and cancer. , Olivia Newton-John's family, via Instagram.<br />In lieu of flowers, the family asks that any donations be made in her memory to the @onjfoundation, Olivia Newton-John's family, via Instagram.<br />Newton-John was also <br />known for her hit <br />songs, "Physical" and <br />"You're the One That I Want.".<br />She is survived by her husband, daughter, sister, brother, nieces and nephews. .<br />John Travolta, her former 'Grease' co-star, issued a heartfelt tribute on social media. .<br />John Travolta, her former 'Grease' co-star, issued a heartfelt tribute on social media. .<br />My dearest Olivia, you made all of our lives so much better. <br />Your impact was incredible. <br />I love you so much. , John Travolta, via Instagram.<br />We will see you down the road and we will all be together again. Yours from the moment I saw you and forever! Your Danny, your John!, John Travolta, via Instagram
