Overview: Spotlighting Olivia Newton-John. Before Olivia Newton-John transformed into leather-clad Sandy in Grease and rocked the charts with "Physical", she became Australia's sweetheart who had amassed three Grammys and eight American Music Awards. Since shooting to fame in the 1970s, Olivia Newton-John has conquered the country, easy listening and pop charts with her wildly successful solo albums and movie soundtracks.