Megan Fox and Brian Austin Green Welcome Baby No. 3 -- Find Out His Name!

The formerly estranged couple welcomed Journey River on Aug. 4.

Megan Fox and Brian Austin Green's newborn baby boy has quite a fitting name!

The Teenage Mutant Ninja Turtles actress revealed in June that she was due "any minute!" with baby No. 3, but it turned out the little bun needed a little more time in the oven: Fox gave birth to Journey River Green on Aug. 4, ET can confirm.

And what a journey Journey has already inspired: Fox filed for divorce from Green in August 2015, citing "irreconcilable differences." Cut to April, when she stepped out noticeably pregnant and later confirmed the couple is very much back on. Now, they've welcomed another son -- all in less than a year!

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Fox, 30, and Green, 43, celebrated the rekindling of their relationship with a babymoon in April, at the same place they first exchanged vows in 2010: Kona, Hawaii.

Journey joins the duo's other kids, 3-year-old Noah and 2-year-old Bodhi, and Fox previously revealed to ET that Noah was ready to be a big brother.

"The older one is excited. Bodhi is too young," she told ET. "He gets it...but he's not thinking about the future. Noah's really excited. He's actually really maternal, and he can't wait to feed and hold and pet the baby. He's practicing a lot with baby dolls. He's doing a good job."

Hear more of what Fox had to say about the new addition to her family in the video below.