People.com said Zolciak, 35, announced she is expecting another baby on Tuesday's finale of her latest reality series "Don't Be Tardy."
Zolciak married Atlanta Falcons defensive end Kroy Biermann, 27, Nov. 11, 2011. They are the parents of 2-year-old Kroy Jr. and 9-month-old Kash Kade. Biermann has also officially adopted Zolciak's daughters from previous relationships.
Celebrity Families of 2014 [PHOTOS]