River Rocket isn't the only quirky name in the family -- Jamie and Jools are known for giving their children adorably unique monikers. Their little bundle of joy has three older sisters -- Petal Blossom Rainbow, 7, Daisy Boo Pamela, 13, and Poppy Honey Rosie, 14 -- and one brother, Buddy Bear Maurice, 5.
The couple announced they were expecting again back in March, just a few hours before Jools flaunted her burgeoning baby bump while walking the red carpet with Jamie at the London premiere of Eddie the Eagle.
"I thought we'd have a couple of kids but that's about it," The Naked Chef star told The Daily Mirror on the red carpet. "Basically, I do what I'm told, but [Jools] is an amazing family maker and I just go with it."