The star's spokesperson confirmed to Us Weekly that she and her husband Adam Housley are expecting a son this fall.
Mowry admitted earlier this year that she would love for her first child with Housley to be a boy, because she is familiar with raising boys.
"I helped raise my brothers, so I have somewhat of an experience raising boys," she explained. "I haven't the slightest idea about raising a girl. It's like the unknown."
Mowry appears in Tia & Tamera, a reality show with her twin sister Tia. The duo previously starred together in the 90s sitcom Sister Sister.
Tia & Tamera's second season airs on Mondays at 8pm ET on Style.
Watch the trailer for Tia & Tamera's season two below: