The Real Housewives of Atlanta star and her NFL-player husband, Kroy Biermann, welcomed their second son, Kash Kade, on Wednesday – joining big brother Kroy Jr.
"@biermann71 and I are sooo excited to tell you baby Kash Kade arrived today!!! Baby and I are doing great!!!! #soblessed," Zolciak, 34, wrote on Twitter.
Biermann, 26, a defensive end for the Atlanta Falcons, also broke the news on Twitter, writing: "I'm so happy to announce that today we @kimzolciak and I welcomed our 2nd son Kash Kade, Mommy and baby are doing great!"
"BABY KASH KADE IS FINALLY HERE!:)," added Zolciak's daughter Brielle, 15.
Zolciak – who also has another daughter, Ariana, 10 – and Biermann met in 2010 and welcomed their first son in May 2011. They were married last November.