Olivia Newton-John has breast cancer for the second time.
The Grease icon previously recovered from the disease 25 years ago.
The 68-year-old had a string of concerts planned across the US and Canada this summer.
A statement on her official Facebook page reads: ‘Olivia Newton-John is reluctantly postponing her June U.S. and Canadian concert tour dates.
‘The back pain that initially caused her to postpone the first half of her concert tour, has turned out to be breast cancer that has metastasized to the sacrum.
‘In addition to natural wellness therapies, Olivia will complete a short course of photon radiation therapy and is confident she will be back later in the year, better than ever, to celebrate her shows.
“‘I decided on my direction of therapies after consultation with my doctors and natural therapists and the medical team at my Olivia Newton-John Cancer Wellness and Research Centre in Melbourne, Australia,” says Olivia Newton-John.
‘There will be no interview requests accepted at this time as Olivia’s focus is on her treatment and healing. Ticket buyers for the upcoming concerts should contact venues directly about refunds. Rescheduled concert dates will be posted at OliviaNewton-John.com in the coming weeks.’
Newton-John was one of the world’s biggest pop stars in the 80s. She scored a string of hits including, of course, the Billboard Hot 100 number one Physical. Furthermore, she has enjoyed a career spanning 45 years.
— RuPaul (@RuPaul) May 30, 2017
RuPaul was quick to share his best wishes to the star on Twitter, telling fans: ‘Let’s all send Olivia healing love energy.’
Fellow Australian star Delta Goodrem, who is playing Newton-John in an upcoming biopic, also addressed the news on social media.
Sending my deepest love and support to my hero, friend and mentor Olivia as she starts treatment. If there is one person that embodies hope and healing it’s Olivia. She is one of the world’s kindest and most giving humans and I send you all my love & well wishes. Love you so much. All my heart ❤️ Delta xx
A post shared by Delta Goodrem (@deltagoodrem) on May 30, 2017 at 6:39pm PDT
She wrote on Instagram: ‘Sending my deepest love and support to my hero, friend and mentor Olivia as she starts treatment.’
Delta furthermore added: ‘If there is one person that embodies hope and healing it’s Olivia. She is one of the world’s kindest and most giving humans and I send you all my love & well wishes. Love you so much. All my heart.’