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Olivia Newton John performs before the men's singles final match at the Australian Open at Melbourne Park, Melbourne, Australia, Jan. 30, 2005.
Olivia Newton John performs before the men’s singles final match at the Australian Open at Melbourne Park, Melbourne, Australia, Jan. 30, 2005.
Australian pop-singer Olivia Newton-John poses in Los Angeles, Calif., on Nov. 21. 1982.
Australian pop-singer Olivia Newton-John poses in Los Angeles, Calif., on Nov. 21. 1982.
Actresses and co-stars Stockard Channing, left, and Olivia Newton-John ready themselves for their roles in the movie version of “Grease,” in Los Angeles, Aug. 30, 1977.
Olivia Newton-John signs a copy of her book 'Livwise' at a central London bookstore, April 19, 2012.
Olivia Newton-John signs a copy of her book ‘Livwise’ at a central London bookstore, April 19, 2012.
Dyan Cannon, left, and Olivia Newton-John share a laugh during Hollywood premiere of 'HBO World Stage: Newton-John in Australia' in Los Angeles on July 14, 1988.
Dyan Cannon, left, and Olivia Newton-John share a laugh during Hollywood premiere of ‘HBO World Stage: Newton-John in Australia’ in Los Angeles on July 14, 1988.
Olivia Newton-John readies herself for her role in the movie version of “Grease,” in Los Angeles, Aug. 30, 1977.
Actress Susan George, left, singer Olivia Newton-John, center, and Australian actress Chantal Contouri, right, get together at the opening party for a new diamond merchant's store, 'Ice' in Beverly Hills, Calif., Aug. 8, 1979.
Actress Susan George, left, singer Olivia Newton-John, center, and Australian actress Chantal Contouri, right, get together at the opening party for a new diamond merchant’s store, ‘Ice’ in Beverly Hills, Calif., Aug. 8, 1979.
Australian pop singer Olivia Newton-John outside the Savoy Hotel in London, circa 1970.
Australian pop singer Olivia Newton-John outside the Savoy Hotel in London, circa 1970.
Singer Sacha Distel with actress and singer Olivia Newton-John in London, March 1972.
Singer Sacha Distel with actress and singer Olivia Newton-John in London, March 1972.
Singer and actress Olivia Newton-John photographed in Sept. 1974.
Singer and actress Olivia Newton-John photographed in Sept. 1974.
Olivia Newton-John, by a goldfish pond outside the Savoy Hotel in London, circa 1970.
Olivia Newton-John, by a goldfish pond outside the Savoy Hotel in London, circa 1970.
Singer and actress, Olivia Newton-John, holding a parasol on April 3, 1974.
Singer and actress, Olivia Newton-John, holding a parasol on April 3, 1974.
Olivia Newton-John holds a red setter dog in Leicester Square, London on Sept. 4, 1970.
Olivia Newton-John holds a red setter dog in Leicester Square, London on Sept. 4, 1970.
Olivia Newton-John, photographed circa 1968.
Olivia Newton-John, photographed circa 1968.
Australian actress and singer Olivia Newton-John holds a press conference on Nov. 29, 1978 in London, England.
Australian actress and singer Olivia Newton-John holds a press conference on Nov. 29, 1978 in London, England.
Olivia Newton-John in the garden of her home in Hertfordshire, England on June 1970.
Olivia Newton-John in the garden of her home in Hertfordshire, England on June 1970.
Australian pop star Olivia Newton-John holds the Olympic torch Sept. 14, 2000 before the Sydney Harbour Bridge, one day before the start of the Sydney 2000 Olympic Games.
Australian pop star Olivia Newton-John holds the Olympic torch Sept. 14, 2000 before the Sydney Harbour Bridge, one day before the start of the Sydney 2000 Olympic Games.
Actor John Travolta, right, and actress and singer Olivia Newton-John during the shooting of the film “Two of a kind” directed by John Herzteld and released in 1983.
Barry Gibb and Olivia Newton John perform on stage during the Sound Relief concert at Sydney Cricket Ground on March 14, 2009 in Sydney, Australia.
Barry Gibb and Olivia Newton John perform on stage during the Sound Relief concert at Sydney Cricket Ground on March 14, 2009 in Sydney, Australia.
John Travolta, center right, and Olivia Newton-John, second from left, at the American Film Festival press conference in Deauville on Sept. 9, 1978 for the presentation of the film “Grease”.
Singer Joe Dassin, right, and singer Olivia Newton-John, record a TV show at the Studio des Buttes Chaumont in Paris, on Nov. 25, 1978.
Singer Joe Dassin, right, and singer Olivia Newton-John, record a TV show at the Studio des Buttes Chaumont in Paris, on Nov. 25, 1978.
Olivia Newton-John poses for a photograph during a press conference to announce the team that will join her on a 21 day walking trek through China for the Great Walk to Beijing charity appeal on Feb. 19, 2008 in Sydney, Australia.
Olivia Newton-John poses for a photograph during a press conference to announce the team that will join her on a 21 day walking trek through China for the Great Walk to Beijing charity appeal on Feb. 19, 2008 in Sydney, Australia.
Australian singer Olivia Newton-John, wearing diamonds to the value of 1.6 million dollars, and John Farnham sing “Dare to Dream” before the assembled athletes during the opening ceremony of the 2000 Summer Olympics in Sydney on Sept. 15, 2000.
Singer Mariah Carey, left, hugs Olivia Newton John who presented Carey with a special award during the 27th Annual American Music Awards on Jan. 17, 2000 in Los Angeles.
Singer Mariah Carey, left, hugs Olivia Newton John who presented Carey with a special award during the 27th Annual American Music Awards on Jan. 17, 2000 in Los Angeles.
Olivia Newton-John and John Travolta at “One World, One Child Benefit Concert” for the Children’s Health Environmental Coalition (CHEC) honoring Meryl Streep, Nell Newman and Dr. Lawrie Mott in Beverly Hills, Ca. on Oct. 10, 2002.
Hugh Jackman, left, and Olivia Newton John attend the 2006 Australia Day Ball to honor Olivia Newton John on January 19, 2007 in New York City.
Hugh Jackman, left, and Olivia Newton John attend the 2006 Australia Day Ball to honor Olivia Newton John on January 19, 2007 in New York City.
Actress Olivia Newton John speaks at “Score: A Hockey Musical” press conference during the 2010 Toronto International Film Festival on Sept. 10, 2010 in Toronto, Canada.
Oprah Winfrey interviews Olivia Newton-John during the second taping of the 'Oprah Winfrey Show' at the Sydney Opera House on December 14, 2010 in Sydney, Australia.
Oprah Winfrey interviews Olivia Newton-John during the second taping of the ‘Oprah Winfrey Show’ at the Sydney Opera House on December 14, 2010 in Sydney, Australia.
Actress Didi Conn, left, director Randal Kleiser, actress Olivia Newton-John, actor John Travolta and actor Barry Pearl on the red carpet as they arrive for the 40th anniversary celebration of the movie “Grease” at the Academy of Motion Picture Arts and Sciences (AMPAS) in Beverly Hills, California on Aug. 15, 2018.
Olivia Newton-John, center, poses in the “Hell’s Chariot” Ford Mercury convertible from the movie “Grease” with “Jubilee” cast members dressed as “The Pink Ladies” and “Chippendales” cast members as the “T-Birds” characters from the film as she attends a welcome event at Flamingo Las Vegas on April 2, 2014 in Las Vegas, Nevada.
Olivia Newton-John, center, celebrates as they lead the inaugural Wellness Walk on Sept. 15, 2013 in Melbourne, Australia.
Olivia Newton-John, center, celebrates as they lead the inaugural Wellness Walk on Sept. 15, 2013 in Melbourne, Australia.
Olivia Newton-John attends the VIP reception for upcoming “Property of Olivia Newton-John Auction Event at Julien’s Auctions on Oct. 29, 2019 in Beverly Hills, Calif.
Olivia Newton-John, left, and John Travolta attend the “Grease” 40th anniversary screening at Samuel Goldwyn Theater on Aug. 15, 2018 in Beverly Hills, Calif.