Ciara started off the home video by asking her children if they wanted a little brother or little sister.
Her son said he wanted a brother and her daughter said she preferred a sister.
The then soon-to-be mother-of-three turned to Russell and asked: “And what do you want it to be?”
He responded: "You know what I want.”
Ciara expressed no preference and said: "Whatever God has for us.”
The proud parents popped a cannon that released blue powder into the air confirming they were having a boy.
The family-of-four seemed ecstatic as they began to run around, dancing and laughing, while Russell chased after the five-year-old.
The One, Two Step songstress revealed on January 30 she was expecting her second child with Russell while on a trip to Turks and Caicos.
Posing at the top of a rock formation and showing off her growing baby bump, she captioned the photo: "Number 3."
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The Seattle Seahawks star and the Grammy winner tied-the-knot in July 2016.
Ciara and Russell share two-year-old daughter, Sienna, together.
She also has five-year-old son Future with rapper Nayvadius “Future” Wilburn, 36.