The albums discography of British-Australian recording artist Olivia Newton-John consists of twenty-eight studio albums, six live albums, seventeen compilations and four soundtracks. She is a four-time Grammy award winner who has amassed five number-one and ten other Top Ten Billboard Hot 100 singles, and two number-one Billboard 200 solo albums. Eleven of her singles (including two platinum) and fourteen of her albums (including two platinum and four double platinum) have been certified gold by the RIAA. She has sold an estimated 100 million records worldwide, making her one of the world's best-selling artists of all time. She starred in Grease, which featured one of the most successful soundtracks in Hollywood history.