Grease star Dame Olivia Newton-John has passed away aged 73, after a long battle with breast cancer. <br /> <br />Her husband, John Easterling, said the British-born singer died "peacefully" at her Southern California ranch. <br /> <br />She was best known for starring as Sandy in the 1978 film, appearing opposite John Travolta, who played Danny Zuko. <br /> <br />Travolta led tributes, saying her "impact was incredible", signing off his social media post as "your Danny". Report by Barberl. Like us on Facebook at http://www.facebook.com/itn and follow us on Twitter at http://twitter.com/itn
