The 36-year-old actress welcomed a son named Atticus James Hallisay on Wednesday (June 24), her rep confirmed to JustJared.com.
Atticus joins big sister, Autumn, 19 months.
Jennifer confirmed that she was expecting back in January. She and Brian tied the knot in 2013 after meeting on their Lifetime show The Client List.
Congrats to the happy parents on the new bundle of joy!