It's been a whopping 44 years since Grease first roared to worldwide success, cementing it as one of the biggest and best loved musicals ever.
This week brought the tragic news that Dame Olivia Newton-John, best known for starring in Grease as Sandy, died aged 73 after a 30 year battle with breast cancer.
The singer and actress, who was born in Cambridge and raised in Australia, died "peacefully" at her Ranch in Southern California on Monday, surrounded by family and friends, her husband, John Easterling has said.