The actress, 33, gave birth to Freddie Wersching Full in Los Angeles on Sunday (08Aug10).
Wersching, who played agent Renee Walker opposite Kiefer Sutherland on the hit U.S. show, debuted her baby bump in May (10) at the series finale party in Los Angeles.
She tells People.com, "He has a full head of hair and is very calm and sweet and adorable. We are all feeling great!"
The couple wed last September (09).