Anastacia Lyn Newkirk (born September 17, 1968), who performs under the single name Anastacia, is an American singer, songwriter and stylist. She became widely known for a distinctive, belting vocal style that blends pop, soul and rock, attracting a large following outside her native United States and earning multi‑platinum success in Europe and Australia.

Early life and beginnings

Born and raised in the Chicago area, Anastacia came from a family with mixed European roots—her father was of German ancestry and her mother of Irish ancestry. She worked in fashion and styling in her early years and has credited those creative experiences with shaping her stage image; at one point she earned money as a stylist while pursuing music. Her breakthrough came after relocating from local stages to professional recording sessions and wider promotion.

Music, style and notable releases

Anastacia's voice is often described as powerful and soulful, capable of strong belting that sits comfortably in a pop-rock context. Her debut and follow-up albums introduced several hit singles that became staples of early 2000s radio across many countries. Notable songs and albums include:

  • “I’m Outta Love” — an international breakthrough single
  • “Left Outside Alone” — a chart-topping single that highlighted her rock and soul fusion
  • Other well-known tracks such as “Paid My Dues” and “Not That Kind”
  • Studio albums that established her reputation and sustained touring career

Health struggles and advocacy

Anastacia has been open about several serious health issues that affected her life and career. She was diagnosed with Crohn’s disease as a teenager, a chronic inflammatory condition that has required ongoing management. In early 2003 she was diagnosed with breast cancer and underwent surgery. A subsequent recurrence led to further treatment and, in 2013, she made public that she had undergone a double mastectomy. Since then she has participated in public conversations, benefit events and awareness campaigns related to cancer and patient support.

Legacy and public image

Anastacia is widely regarded for her resilience and for bringing a raw vocal power to mainstream pop music. Often referred to by fans for her small stature paired with a large voice, she has maintained steady touring and recording activity across decades. Critics and listeners note her contribution to a more cross-genre pop sound and her willingness to speak candidly about health, which has inspired many fans and raised the profile of related charitable causes.