Olivia Newton-John

Grease 2 hit cinemas four years after the original movie came out, and it introduced a major new Hollywood star.

In 2016 the TV movie Grease Live! Newton-John was quizzed by Billboard if she gave any tips to her replacement, Hough. Newton-John did have some good things to say about another Grease sequel, however. And in 1982 Grease 2 hit cinemas with the iconic characters noticeably absent from the picture. Newton-John and Travolta were reportedly approached during the beginning of Grease 2's production. What's more, Cher was down to play one of the Pink Ladies, Paulette Rebchuck.