THE TONIGHT SHOW STARRING JOHNNY CARSON — Pictured: Musical guest Olivia Newton-John performing on March 14, 1975 — (Photo by: Ron Tom/NBCU Photo Bank/NBCUniversal via Getty Images via Getty Images)
1981: British born, Australian singer and actress Olivia Newton-John performing live at "Platen 10-daagse" (Photo by BSR Agency/Gentle Look via Getty Images)
Colorado – 1975: (L-R) Olivia Newton-John, John Denver appearing in the ABC tv special 'Rocky Mountain Christmas'. (Photo by Walt Disney Television via Getty Images)
