Gwen Renée Stefani (born October 3, 1969) is an American singer, songwriter, and fashion designer. She is the co-founder and lead vocalist of the band No Doubt that experienced major success after their breakthrough studio album Tragic Kingdom (1995) along with several successful singles including; "Don't Speak", "Hey Baby" and "It's My Life". During the band's hiatus, Stefani embarked on a solo pop career in 2004 by releasing her debut studio album Love. Angel. Music. Baby. Inspired by pop music from the 1980s, the album was met with both critical and commercial success. It spawned three commercially successful singles: "What You Waiting For?", "Rich Girl", and "Hollaback Girl", the latter reached number one on the Billboard Hot 100 while also becoming the first US download to sell one million copies. In 2006 Stefani released her second studio album The Sweet Escape.