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- NEW YORK CITY - JUNE 13: Singer Olivia Newton-John and musician Elton John attend the 'Grease' Premiere Party on June 13, 1978 at Studio 54 in New York City. (Photo by Ron Galella/WireImage)
- Olivia Newton John (Photo by Tom Wargacki/WireImage)
- Singer and actress Olivia Newton-John and co-star John Travolta attend the premiere of the film 'Grease', 1978. (Photo by Michael Ochs Archives/Getty Images)
- HOLLYWOOD, CA - 1978: Singer and actress Olivia Newton-John and co-star John Travolta attend their 1978 Hollywood, California, premiere of 'Grease.' Produced by Alan Carr, 'Grease' was one of the hit films of 1978. (Photo by George Rose/Getty Images)
- Olivia Newton John and John Travolta (Photo by Ron Galella/WireImage)
- 1978: Olivia Newton-John and John Travolta in Randal Kleiser's musical 'Grease' about high school life and growing up in the 1950's. (Photo by Evening Standard/Getty Images)
- Olivia Newton John and guests (Photo by Ron Galella/WireImage)
- Olivia Newton-John and John Travolta in a scene from the film 'Grease', 1978. (Photo by Paramount/Getty Images)
- Actress Olivia Newton-John attends the premiere party for 'Grease' on June 13, 1978 at Studio 54 in New York City.
- 1978: Australian singer and actor Olivia Newton-John and American actor John Travolta dance in a crowded high school gym in a still from the film, 'Grease,' directed by Randal Kleiser. (Photo by Paramount Pictures/Fotos International/Getty Images)
- 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. Ms. Channing and Ms. Newton-John star with John Travolta in the film. (AP Photo/Nick Ut)
- Olivia Newton-John Matt Lattanzi 1982 Photo By John Barrett/PHOTOlink.net / MediaPunch /IPX
- Swedish pop group ABBA are pictured during rehearsals for the "Olivia! TV Special," with fellow pop stars Olivia Newton-John, right and Andy Gibb, background left, May 1, 1978. From left: Benny Andersson, Andy Gibb, Anni-Frid Lyngstad, unidentified, Agnetha Faltskog, Bjorn Ulvaeus, and Olivia Newton-John. (AP Photo/George Brich)
- Olivia Newton John 1978 Photo By John Barrett/PHOTOlink.net / MediaPunch /IPX
- Australian singer-actress Olivia Newton-John is photographed on Jan. 21, 1982 in Los Angeles, California. (AP Photo/Reed Saxon)
- Olivia Newton-John headshot, singer, photo
- Olivia Newton-John sings at her "Greatest Hits Live" concert in Hong Kong August 18, 2000. The 51-year-old singer will perform with Australian singer John Farnham at the opening ceremony of the Sydney 2000 Olympic Games in September. BY
- Actor Pierce Brosnan and companion, Keely Shaye Smith (L) pose with singer Olivia Newton-John as they arrive for the 10th annual Environmental Media Awards December 6, 2000 in Santa Monica. Brosnan and Smith were honored with the Ongoing Commitment award and Newton-John received the International Environment Award at the event which recognizes members of the entertainment industry that have expressed concern for the environment through their work. FSP/JP
- CAPTION CORRECTION ADDING DATE Actor John Travolta and Australian singer Olivia Newton-John perform a song from their musical film "Grease" during a party at Paramount studios September24, 2002 in Hollywood celebrating the DVD release of six classic musical films including "Grease," "Saturday Night Fever," "Flashdance," and "Footloose." This is the first time they performed songs from "Grease" since 1982. REUTERS/Fred Prouser FSP
- Australian pop star Olivia Newton-John poses for photographers at a news conference in Tokyo April 1, 2003. Olivia Newton-John is in Japan for her first concert tour here in 25 years. REUTERS/Eriko Sugita ES
- Australian veteran pop singer Olivia Newton-John sings at a concert in Tokyo April 4, 2003. Olivia Newton-John is now in Japan for a concert tour. REUTERS/Kimimasa Mayama KM/CC
- Singer Olivia Newton-John arrives at the Westin Hotel in Sydney for the Australian Red Cross 90th Anniversary Gala dinner. Singer Olivia Newton-John arrives at the Westin Hotel in Sydney for the Australian Red Cross 90th Anniversary Gala dinner March 2, 2005 at which Danish Crown Prince Frederik and his wife Princess Mary are also attending. REUTERS/Paul Miller/Pool
- Singer Olivia Newton-John arrives for the 39th Annual Country Music Awards in New York November 15, 2005. REUTERS/Mario Anzuoni
- Singer Olivia Newton-John arrives with British recording artist Cliff Richard at the 39th Annual Country Music Awards in New York, November 15, 2005. REUTERS/Mario Anzuoni
- Australian singer and actress Olivia Newton-John (R) poses with actor John Travolta and his wife, actress Kelly Preston, as they arrive at the Penfolds Icon Gala Dinner during G' Day LA Australia Week 2006 in Hollywood January 14, 2006. Travolta, who starred with Newton-John in the 1978 movie "Grease", will present her with the Lifetime Achievement award at the gala. REUTERS/Fred Prouser
- Actor John Travolta (L) and actress Olivia Newton-John pose for photographers at the Australia.com black tie gala in Los Angeles January 19, 2008. REUTERS/Phil McCarten (UNITED STATES)
- Singer and actress Olivia Newton-John jokes with the media at the Jinshanling section of the Great Wall in Hebei province, April 7, 2008 at the start of the "Great Walk to Beijing" which she initiated to raise funds to build the Olivia Newton-John Cancer Centre in Melbourne Australia. International stars and cancer survivors will walk 228 km (142 miles) along the Great Wall of China for 23 days. REUTERS/Reinhard Krause (CHINA)
- Actor John Travolta and actress Olivia Newton-John attend the G'Day USA 2010 Los Angeles gala in Hollywood, California January 16, 2010. The evening honors high profile individuals for their achievements and for excellence in promoting Australia in the United States. REUTERS/Mario Anzuoni (UNITED STATES - Tags: ENTERTAINMENT)
- Olivia Newton-John presents the worldwide artist award to Taylor Swift, who is not in attendance, during the 4th annual American Country Awards in Las Vegas, Nevada December 10, 2013. REUTERS/Lucy Nicholson (UNITED STATES - Tags: ENTERTAINMENT)
- Actress Olivia Newton-John arrives at the 50th Annual Country Music Association Awards in Nashville, Tennessee, U.S., November 2, 2016. REUTERS/Jamie Gilliam
- Cast members John Travolta and Olivia Newton-John pose at a 40th anniversary screening of "Grease" at the Academy of Motion Picture Arts and Sciences in Beverly Hills, California, U.S., August 15, 2018. REUTERS/Mario Anzuoni