Many who knew and loved Olivia Newton-John and speaking out after her death.

Grease star Olivia Newton-John has died today aged 73 at her home n California.

Olivia Newton-John, who starred in movies like Grease and Xanadu, has passed away at the age of 73.

How does Wolverine measure up as Sandra Dee?

Apparently, some viewers thing Grease is a little less hydr-o-matic, and a bit more pro-ble-matic.

Grease stars John Travolta and Olivia Newton-John make a special appearance dressed as their iconic characters, Danny and Sandy, from the film.

We got chills (yep, definitely multiplying) seeing the Grease actors in their iconic costumes.