Olivia Newton-John

The 'Physical' singer and international icon was previously diagnosed with breast cancer.

When you find out which beloved New Jersey actor has been named to a list of worst movie couples ever, it will probably break your heart.

Whether they’re lobbying against vaccination bills or spreading misinformation on social media, these stars have a lot to say about vaccines.

Olivia Newton-John received some devastating news when she learned that her breast cancer had returned. But she is optimistic that she will fight the disease once again.

Newton-John previously battled cancer in 1992.

Olivia Newton-John fans hoping to catch the singer live in concert this month will have to wait, as she has canceled all scheduled tour dates for May.

One 2013 fan theory speculates the plot of 'Grease' is the product of a coma-induced fantasy that takes place entirely in Sandy's head.

Those who have waited for decades for Danny Zuko and Sandy Olsen to reunite may not have quite had this in mind when John Travolta and Olivia Newton-John decided to do a Christmas music video together...

Today "Grease" opened in theaters in 1978.  John Travolta was so good-looking dancing and singing and Olivia Newton-John was just as adorable.