Gwen Stefani is a new mom.

The 44-year-old No Doubt star and her rocker/actor husband Gavin Rossdale became parents to a third son on Friday (28Feb14).

The proud dad announced the news to fans on Twitter.com on Saturday (01Mar14), writing, "Welcome Apollo Bowie Flynn Rossdale 2/28/14. Bowie and Flynn = (our) mothers' maiden names."

Baby Apollo is the younger brother of Kingston, seven, and five-year-old Zuma.

Stylish Stefani celebrated the impending birth last month (08Feb14) with a baby shower, which was attended by fellow celebrity moms Gwyneth Paltrow and Jessica Alba.