Anastacia (born Anastacia Lyn Newkirk; September 17, 1968) is an American singer-songwriter. Anastacia has been highly successful in Europe, Asia, South Africa and South America, but has not had as much success in her native United States. Her debut album, Not That Kind, released in 2000, achieved multi-platinum sales in Australia, New Zealand and much of Europe causing her to be critically acclaimed by Elton John and Michael Jackson, have the 4th biggest European single and biggest Australian single of 2000 and to be awarded 'Best-selling International Artist' in 2000. Her next two albums continued her multi-platinum-selling success throughout Europe and Oceania making her one of the fastest and biggest-selling artists of the new millennium.
In 2005, she was recognized for worldwide sales of over 20 million albums/records. Anastacia is world-renowned for her powerful soul voice, and her small stature - 5 feet 3 inches (160 cm). She was also known for her trademark glasses (often darkly tinted), but she had surgery to correct her vision permanently in August 2005.