Anastacia (born Anastacia Lyn Newkirk on September 17, 1968) is a multi-platinum American singer and songwriter. Anastacia has been highly successful in Europe, Latin America, Oceania, Asia, South Africa and Australia but has not had as much success in her native United States. Despite the lack of American success, she had sold over 20 million albums by 2005.
Anastacia is world renowned for her edgy, soulful voice and is famous for her ability to hit powerful notes in a full voice range well into Soprano tessituras. Her small stature (160 cm or 5'3") has also led to her being nicknamed "The Little Lady with The Big Voice". She was also known for her trademark glasses (often darkly tinted), but she had surgery to correct her vision permanently in August 2005.