Jason Merritt/Getty Images for Wallis Annenberg Center for the Performing Arts
Gwen Stefani and Gavin Rossdale are now the proud parents of three boys!
"Welcome Apollo Bowie Flynn Rossdale 2/28/14," Rossdale tweeted on Saturday, confirming the bundle of joy arrived on Friday. He added, "Bowie and Flynn = mothers' maiden names."
Apollo joins big brothers Kingston, 7, and Zuma, 5. The Bush frontman is also dad to model Daisy Lowe, 24, from a prior relationship.
The No Doubt singer didn't share her pregnancy news in grand fashion—but she revealed her baby's gender in an adorable Instagram snapshot back in January.
"I was ready to hand over the crown. but I guess I am still queen of the house. #itsaboy #surroundedbyboys," the three-time Grammy winner, 44, wrote in the accompanying caption.
The L.A.M.B. designer celebrated her baby shower with a star-studded bash on Feb. 8. The blond beauty was joined by close family members as well as Gwyneth Paltrow, Nicole Richie, Rachel Zoe, Jessica Alba, Kate Beckinsale and Chelsea Handler, a source told E! News at the time.
According to an eyewitness, Stefani looked "radiant" as she arrived to the party, sporting black leather pants and a colorful blazer.
"As she walked over the bridge and joined her friends she had a big smile on her face and was giving everyone hugs," the eyewitness said. "There was a big welcome cheer for her and she seemed very grateful for all of the love."
Stefani shared a few pics from the baby shower, revealing a table full of blue-iced doughnuts and blue candies, gorgeous white roses surrounded by candles, a decadent slice of marbled cake and a baby's head cake.
"baby shower!!! #can't believe im pregs thanku Shelli Azoff for a beautiful #girlyday =blessed," Stefani captioned one of the shots, followed by "#babyshower #cake lucky girl i am gx" on another.
Us Weekly was first to report the exciting news.
Congrats to the new family!