March 01, 2014 03:15 PM

Gregg DeGuire/WireImage

And baby makes five!

Gavin Rossdale and Gwen Stefani welcomed their third son together on Friday, the musicians confirm.

“Welcome Apollo Bowie Flynn Rossdale 2/28/14,” Rossdale announced via Twitter Saturday. “Bowie and Flynn = [our] mothers’ maiden names.”

Rossdale, 48, and Stefani’s new baby boy joins big brothers Zuma Nesta Rock, 5½, and Kingston James McGregor, 7½.

The couple — who have been married for 11 years and together for 16 — kept mostly mum on the pregnancy until Stefani, 44, started her Instagram account off with a surprise in January, revealing her brood of boys would be growing by one.

“I was ready to hand over the crown. But I guess I am still queen of the house. #itsaboy #surroundedbyboys,” she captioned a shot of her sporting a crown.

Shortly after her announcement, the No Doubt frontwoman proved she was effortlessly incorporating her growing belly into her signature sexy style by sharing a selfie of her all-black outfit.

In February, Stefani was joined by family and friends for her baby shower, complete with a blue and cream-themed treat table and a pea in the pod cake.

@gwenstefani welcome APOLLO BOWIE FLYNN ROSSDALE ❤️❤️❤️ 2/28/14 ❤️❤️❤️ (bowie and Flynn =mothers’ maiden names )

— GAVIN ROSSDALE (@GavinRossdale) March 1, 2014

— Anya Leon

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