There are not enough superlatives to describe the phenomenal singing prowess of Gwen Stefani. Gwen is a singer, songwriter and fashion designer by profession. Although Gwen is the lead vocalist of the band, No Doubt, she has also been able to forge a successful career as a solo artist. Her song, Hollaback Girl, has the distinct honour of being the first US download to sell one million copies. The singer, with her band and as a solo artist, has sold over 30 million albums worldwide. In her career thus far, she has been bestowed upon with three Grammy Awards. The pop star wears 5 US size shoes to keep her feet comfortable.