Olivia Newton-John AO, OBE (born 26 September 1948 in Cambridge, England, United Kingdom) is an acclaimed British-born, Australian singer and actress. She is a four-time Grammy award winner who has amassed five No. 1 and ten other Top Ten Hot 100 singlesand two No. 1 Billboard 200 albums. The RIAA has certified gold 11 of her singles (including two platinum) and 14 of her albums (including two platinum and four double platinum). She co-starred with John Travolta in the film adaptation of the Broadway musical, Grease, which became the highest grossing movie musical in Hollywood history. She is an avid activist for both environmental issues and breast cancer awareness.Her business interests have included launching several product lines for Koala Blue.