According to People, David and Jaime welcomed a baby girl, Bardot Vita Boreanaz, to the family on Monday.
The little Boreanaz bundle of joy weighed in at 7 lbs., 14 oz., and joins older brother Jaden Rayne, 7, in the family.
Prior to the birth, the "Bones" star stayed close to home just in case Jaime, who was restricted to bed-rest, went into labor.
"I must maintain a 20-mile radius. I cannot travel beyond that," the 40-year-old actor told the mag. "If I do, I'll freak out – I have to be there when the baby comes."
The new mom recently gushed to the mag about being pregnant again.
"We've been trying to have another baby for a couple of years now so we are beyond excited," she recently told the mag. "We're over the moon."
Season 5 of "Bones" debuts on FOX on September 17.