Dame Olivia Newton-John has died at the age of 73, her husband has confirmed.

The British-born singer died “peacefully” at her ranch in Southern California on Monday morning, surrounded by family and friends.

Newton-John is best known for her starring role in the 1978 film Grease, in which she starred opposite John Travolta as Sandy.

In a statement  posted to Instagram, her husband John Easterling wrote: “We ask that everyone please respect the family’s privacy during this very difficult time.

“Olivia has been a symbol of triumphs and hope for over 30 years sharing her journey with breast cancer.

“Her healing inspiration and pioneering experience with plant medicine continues with the Olivia Newton-John Foundation Fund, dedicated to researching plant medicine and cancer.”

Mr Easterling added that in lieu of flowers, donations be made to Newton-John’s foundation.

She is survived by her husband as well as her daughter Chloe Lattanzi.