Sir Cliff Richard and Newton John at the Royal Variety Performance, London, UK. PA
Dame Olivia Newton-John has died at the age of 73, her husband has confirmed. PA
At a VIP reception for the Property of Olivia Newton-John Auction Event at Juliens Auctions in 2019 in Beverly Hills, California. Getty / AFP
Newton-John and John Travolta in a scene from the film 'Grease'. Paramount / Getty
Newton-John passes the Olympic flame to Australian tennis player Pat Rafter in front of Sydney Harbour Bridge. AFP
Newton-John and the late actor Kelly Preston at the Children's Health Environmental Coalition on Capitol Hill in Washington. BM / BK
Newton-John was a long-time advocate for breast cancer awareness. AP
Newton-John and Travolta became life-long friends after starring in 'Grease' together in 1978. Paramount Pictures / Library of Congress
Newton John with British recording artist Cliff Richard for the 39th Annual Country Music Association Awards in New York, 2005. AP
Newton-John, a longtime resident of Australia whose sales topped 100 million albums, died Monday at her southern California ranch, John Easterling, her husband, wrote on Instagram and Facebook. AP
Travolta presented Newton-John with a Lifetime Achievement award at the Penfolds Icons gala dinner in 2006. AP
Newton-John performs onstage during the 58th Vina del Mar International Song Festival, in Vina del Mar, Chile in 2017. EPA
Newton-John and Travolta pose on the red carpet at the 40th anniversary celebration of the movie 'Grease' at the Academy of Motion Picture Arts and Sciences (AMPAS) in Beverly Hills, California in 2018. AFP
Newton-John gained worldwide fame as high-school sweetheart Sandy in the hit musical movie 'Grease'. AFP
Newton-John's, whose career spanned more than five decades, devoted much of her time and celebrity to charities after being diagnosed with breast cancer in 1992. AFP
Newton-John also starred in the cult classic 'Xandu'. AFP
Newton John performs at the 85th annual Hollywood Christmas parade on Hollywood Boulevard in Hollywood, California in 2016. AFP
Newton-John and Travolta in a scene from the film 'Two of a Kind' directed by John Herzteld and released in 1983. AFP
Newton-John at a Cancer Research Institute event at the Parliament House in Canberra, Australia, 2017. EPA
The 'Xandu' star received an Honorary Doctorate of Letters at a special graduation ceremony at La Trobe University, Union Hall, Melbourne, Victoria, Australia in 2018. EPA
Newton John and her husband, Australian entrepreneur John Easterling. EPA
Travolta considered Newton-John one of his closet friends. AP
Travolta and Newton-John in 1978 during the Deauville American Film Festival for the presentation of the film 'Grease' in Deauville, France. AFP
Newton-John at the Cannes Film Festival in 1994. AFP
Flowers placed at Newton-John's Hollywood Walk of Fame star in Los Angeles, California. AP
Newton-John performing at the Riviera in Las Vegas, Nevada, 1977. Las Vegas News Bureau / EPA
Newton-John beat out Dolly Parton and Loretta Lynn for best country singer at the Country Music Awards in 1974. Las News Bureau / EPA
Newton-John died 'peacefully' at her ranch in Southern California on Monday morning, surrounded by family and friends. EPA
Sir Cliff Richard and Newton John at the Royal Variety Performance, London, UK. PA
Dame Olivia Newton-John has died at the age of 73, her husband has confirmed. PA
At a VIP reception for the Property of Olivia Newton-John Auction Event at Juliens Auctions in 2019 in Beverly Hills, California. Getty / AFP
Newton-John and John Travolta in a scene from the film 'Grease'. Paramount / Getty
Newton-John passes the Olympic flame to Australian tennis player Pat Rafter in front of Sydney Harbour Bridge. AFP
Newton-John and the late actor Kelly Preston at the Children's Health Environmental Coalition on Capitol Hill in Washington. BM / BK
Newton-John was a long-time advocate for breast cancer awareness. AP
Newton-John and Travolta became life-long friends after starring in 'Grease' together in 1978. Paramount Pictures / Library of Congress
Newton John with British recording artist Cliff Richard for the 39th Annual Country Music Association Awards in New York, 2005. AP
Newton-John, a longtime resident of Australia whose sales topped 100 million albums, died Monday at her southern California ranch, John Easterling, her husband, wrote on Instagram and Facebook. AP
Travolta presented Newton-John with a Lifetime Achievement award at the Penfolds Icons gala dinner in 2006. AP
Newton-John performs onstage during the 58th Vina del Mar International Song Festival, in Vina del Mar, Chile in 2017. EPA
Newton-John and Travolta pose on the red carpet at the 40th anniversary celebration of the movie 'Grease' at the Academy of Motion Picture Arts and Sciences (AMPAS) in Beverly Hills, California in 2018. AFP
Newton-John gained worldwide fame as high-school sweetheart Sandy in the hit musical movie 'Grease'. AFP
Newton-John's, whose career spanned more than five decades, devoted much of her time and celebrity to charities after being diagnosed with breast cancer in 1992. AFP
Newton-John also starred in the cult classic 'Xandu'. AFP
Newton John performs at the 85th annual Hollywood Christmas parade on Hollywood Boulevard in Hollywood, California in 2016. AFP
Newton-John and Travolta in a scene from the film 'Two of a Kind' directed by John Herzteld and released in 1983. AFP
Newton-John at a Cancer Research Institute event at the Parliament House in Canberra, Australia, 2017. EPA
The 'Xandu' star received an Honorary Doctorate of Letters at a special graduation ceremony at La Trobe University, Union Hall, Melbourne, Victoria, Australia in 2018. EPA
Newton John and her husband, Australian entrepreneur John Easterling. EPA
Travolta considered Newton-John one of his closet friends. AP
Travolta and Newton-John in 1978 during the Deauville American Film Festival for the presentation of the film 'Grease' in Deauville, France. AFP
Newton-John at the Cannes Film Festival in 1994. AFP
Flowers placed at Newton-John's Hollywood Walk of Fame star in Los Angeles, California. AP
Newton-John performing at the Riviera in Las Vegas, Nevada, 1977. Las Vegas News Bureau / EPA
Newton-John beat out Dolly Parton and Loretta Lynn for best country singer at the Country Music Awards in 1974. Las News Bureau / EPA
Newton-John died 'peacefully' at her ranch in Southern California on Monday morning, surrounded by family and friends. EPA
Sir Cliff Richard and Newton John at the Royal Variety Performance, London, UK. PA