The star gave birth to the healthy baby on 5th October, and has just revealed his name is Caleb Kelech.
Kerry, 39, who is best known for her role in the popular TV series Scandal, is now a mother of two as she already shares a daughter with her husband Nnamdi - an ex-footballer for the San Francisco 49ers.
The couple exclusively revealed their happy announcement to E! News, who confirmed the new arrival was born at the beginning of the month.
The pair are known for keeping their personal life very private and haven't expressed the news on any social media accounts as yet. It's known that the couple very rarely make public appearances together, with Nnamdi leaving his glamorous wife to take on the spot light alone at most red carpet events.
Despite being private, it was no secret that Kerry was heavily pregnant after wearing a gorgeous and revealing black dress at the Prime Time Emmy awards in September.
She also spoke to the Los Angeles Times in 2015, opening up about her feelings on motherhood and her family. Admitting how lucky she felt, she said, 'I just feel really blessed that I'm kind of living extraordinary dreams come true in my work life and in my personal life.'
Kerry and her football player husband Nnamdi have been married for three years after tying the knot in Hailey, Idaho, in June 2013. They dated for a year before becoming husband and wife. They already share a beautiful daughter Isabelle, who is two years old.
Last year she spoke to ET about being able to have her daughter at work with her, saying, 'I'm really blessed because my daughter gets to be at work with me a lot so that's really fun and wonderful. Everybody at work really likes it.
'She brings a lot of joy wherever she is so it's fun to have her around.'
Congratulations to the news family of four!