Olivia Newton-John dies aged 73

Olivia Newton-John passed away peacefully at her ranch in southern California on Monday morning

Olivia Newton John and John Travolta, pictured in the 1978 classic Grease.

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

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