I was ready to hand over the crown. but I guess I am still queen of the house. #itsaboy#surroundedbyboys
It's her third baby with husband, rocker Gavin Rossdale.
The 44 year old has been married since September 2002 to Rossdale, 48, are they are already parents to sons Kingston, 7, and Zuma, 5.
In October 2012, the L.A.M.B. designer spoke to 'Marie Claire' about wanting another baby. "I really, really, really wanted one about two years ago. And it didn't work out," she said at the time. "So...I feel good with what we've got. Everything works out how it should. You can't plan anything, right? You can try."