The 35-year-old Walking Dead star and the 32-year-old photographer announced the happy news on Instagram on Tuesday afternoon (April 30).
Joana shared a sweet picture of herself lying in a hospital bed with her baby girl sleeping on her chest. She also shared a photo of the baby laying down in a white onesie and a hospital bonnet.
The baby’s name and birthdate have not been revealed yet.
Last December, Joana announced she was expecting her second child.
Steven and Joana welcomed a son together, Jude Malcom Yeun, in 2017 on St. Patrick’s Day. They tied the knot in December 2016 after seven years together.