Born in 1948, in Cambridge, England, she became a movie star and recorded over twenty musical hits. Her 1981 recording was the largest-selling single of the 1980's. Who is she?

The English-born, Australian-raised superstar Olivia Newton-John fits this description perfectly. She first rose to fame in the 1970s as a country-pop singer with hits like "I Honestly Love You." Her career exploded into a global phenomenon in 1978 when she starred as Sandy Olsson opposite John Travolta in the blockbuster musical *Grease*. This role cemented her status as both a beloved movie icon and a chart-topping recording artist, seamlessly blending her two talents.

In 1981, Newton-John shed her wholesome image with the release of her smash hit, "Physical." The song's suggestive lyrics and infectious synth-pop beat were a sensation, rocketing it to the top of the charts for ten consecutive weeks. Its success was so immense that Billboard later named it the biggest single of the entire 1980s decade. The accompanying music video, which featured Newton-John in a gym leading a workout, was equally iconic, winning a Grammy Award and helping to popularize the headband-and-leotard fitness craze of the era.