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Olivia Newton-John

Australian singer Olivia Newton-John, 64, was diagnosed in 1992 and underwent a partial mastectomy and chemotherapy. Her 2005 album, "Stronger than Before" promoted breast cancer awareness. She also introduced the "Olivia Breast Self-Exam Kit" and helped build the Olivia Newton-John Cancer Centre in her native Melbourne, Australia.Jean-Paul Pelissier/Reuters