Olivia Newton-John has died. She was 73. The iconic performer's family confirmed her death via her Instagram account, revealing she died at home in Southern California on Monday. Olivia is known best for her role as Sandy in the classic film 'Grease,' as well as her musical endeavors, including hits like 'Physical' and 'I Honestly Love You.' For more watch Entertainment Tonight: https://www.etonline.com/showfinder Exclusives from #EntertainmentTonight https://www.youtube.com/playlist?list=PLQwITQ__CeH2Y_7g2xeiNDa0vQsROQQgv