The singer-actress, who took the title of "American Idol" on the reality show's third season, gave birth Dec. 13 in North Carolina.
Her son, who weighed in at 7 lbs., 9 oz., joins 10-year-old big sister Zion.
Barrino has been seen on Broadway as Celie in The Color Purple. Following her Broadway run, the actress reprised her performance in the national tour. She has also been seen in her television biopic "Life Is Not a Fairy Tale: The Fantasia Barrino Story."