The No Doubt singer, 44, announced the news on her new Instagram page on Friday (17 January) and chose to share the sex with her fans - a baby boy.
The platinum blonde beauty posted a glamorous photo of herself wearing a gold crown, with the message: "I was ready to hand over the crown. but I guess I am still queen of the house. #itsaboy #surroundedbyboys."
It's the first time Gwen has publicly admitted she's expecting, despite her growing bump over the past few months!
Although she won't be 'handing over the crown' to a baby girl, Gwen will be giving sons Kingston James McGregor and Zuma Nesta Rock, who are seven and five, a younger brother.
The new baby will be Gwen's third with husband of 11 years, former frontman of rock band Bush, Gavin Rossdale. Although in 2004, it was revealed that Gavin had previously had a daughter Daisy Lowe, with his ex-girlfriend Pearl Lowe.
As fans congratulated Gwen on her happy news, one said "Love Your music gwen! Congrats on your beautiful growing family!", while another suggested she may have wanted a girl by writing: "Hope you'll get your baby girl someday. You'll always be the Queen of the OC!"
Huge congratulations Gwen!
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