Olivia Newton-John has hinted there could be a 'Grease' reunion to mark its 40th anniversary.

The 68-year-old actress - who starred as Sandy in the 1978 iconic film opposite John Travolta's Danny - would love to get the cast together in 2018 to mark four decades since the film was released.

Speaking on ITV's 'This Morning', she said: ''I can't believe it's that long. I would like to do something special to help the hospital I work with, but I don't know if we could get the rest of the cast together.''

Olivia was diagnosed with breast cancer over 20 years ago and launched the Olivia Newton-John Cancer Wellness & Research Centre to help patients who are going through a similar thing to what she did.

She shared: ''I have a cancer and wellness centre in Melbourne, Australia that I'm very proud has my name and so I continuously fundraise to improve and increase the wellness programmes.

''We have a comprehensive cancer centre with state of the art everything but the wellness centre is my baby because I think to take care of a person you need to take care of body, mind and spirit. So at the wellness centre we embrace all those.''

And Olivia believes she would be a different person if she hadn't battled cancer.

She explained: ''If it wasn't for the cancer, I wouldn't be doing what I do today, which is working with a hospital and wellbeing. I try to look for positives. Of course I was frightened and scared and I know some people haven't been as lucky as me.''

Meanwhile, Olivia previously insisted she is ''grateful'' for having cancer as it has ''taught her about compassion''.

She shared: ''I am grateful for the experience because without it I would not have done many of the things I have done in my life. It's taught me compassion for those going through difficult times.''