Gwen Stefani's solo debut in 2004 with Love. Angel. Music. Baby. was a star turn. The record, which features the iconic track "Hollaback Girl," debuted at No. 7 on the Billboard 200 chart and even earned six Grammy nominations (via Billboard). Stefani has gone on to release three more solo albums, the most recent being a Christmas album in 2017. 

Around the time of L.A.M.B.'s release, Stefani created a fashion line of the same name, which still exists and has sold everything from clothing to accessories to fragrance. Stefani has also acted in both film and television, but her most successful ventures in TV have been her coaching gigs on shows like The Voice, American Idol, and The X-Factor. She currently serves as a coach on The Voice, and has for the past four years.

Like many stars, a portion of Stefani's wealth also lies in real estate. After her 2016 divorce, the singer maintained ownership of the $13.25 million home Stefani shared with her ex-husband, and went on to sell it for $21.65 in 2019. She owns at least two other Los Angeles homes. Taking all of these ventures into account, Celebrity Net Worth estimates that Stefani is worth around $150 million. However, it's unlikely that she'll stop there — at the end of 2020, the musician and entrepreneur released a brand new single in anticipation of an upcoming album (via Billboard).