"[Biermann] and I are happy to announce YES WE ARE PREGNANT," Zolciak wrote.
The 33-year-old "Tardy for the Party" singer and Biermann, a football player for the Atlanta Falcons, wed last November. Their nuptials will be featured in the new Bravo series Don't be Tardy for the Wedding, which will premiere April 26 at 9/8c.
The couple welcomed a baby boy, Kroy Jagger Biermann Jr., in May. Zolciack has two daughters, Brielle and Ariana, from a previous marriage.