The actress is expecting her second child with husband Kenric Green.
The pair has announced on Instagram a baby girl is on the way.
"Adding another passenger to the Green train! All aboard little lady, this train is fueled by Love and we're already overflowing with it for you," "The Walking Dead" star wrote beneath a photo of herself, her husband, and their five-year-old son, Kenric II.
The couple wed in 2010.