Singer/actress Olivia Newton-John has passed away peacefully at her home at age 73, according to a statement from her family. Newton-John was British by birth but her family moved to Australia when she was five years old and rose to international fame there. Her talents were noticed when she performed in high school and she would go on to become an iconic international pop singer. In 1978, she made her screen debut opposite John Travolta in the blockbuster big screen adaptation of the stage musical "Grease". Other film roles would follow, but it was her singing career that never waned. Over the decades, she would sell over 100 million albums. In 1992, Newton-John was diagnosed with breast cancer. She became a symbol of hope by going public with her struggle and raising many millions of dollars to combat the disease. The cancer would reoccur two more times over the years. For more about her life and career, click here.