She is the OG of black leggings, I had to own them as the Spanx founder.” Olivia Newton-John Opens Up About Breast Cancer Diagnosis as She Rewears Iconic Grease Costume In an interview with ...

John Travolta and Olivia Newton-John reprise their iconic roles ... the “good girl” outfit for a leather jacket and black leggings like the one she wore during the Grease finale.