"No Doubt" singer Gwen Stefani's son Zuma, an aspiring country singer, is a lookalike to stepdad and ex-coach of "The Voice" Blake Shelton.

Gwen Stefani celebrated her "sweet and talented" middle son Zuma this week with a special post on social media. Zuma turned 17 on Thursday (Aug. 21), and the proud mom of three boys marked the occasion by sharing a series of photos and a video of her son strumming on a guitar and singing.

Stefani shares Zuma with her ex-husband, Bush lead singer Gavin Rossdale, whom she married in 2002. The former couple also welcomed two more sons, Kingston (born in 2006) and Apollo (born in 2014), before they filed for divorce in 2015.