Brielle, 16, and Ariana, 12, are the Real Housewives of Atlanta star's children from a previous relationship. Zolciak, 35, and NFL player Biermann, 27, wed in 2011 when their first son together, Kroy Jr., was 6 months old. They welcomed another boy, Kash, in 2012. Zolciak recently revealed on the Don't Be Tardy finale that she is pregnant with her fifth child.
"With Kroy, it was just real," Zolciak said about his relationship with her daughters. "He was painting nails, they were painting his nails. It just worked from the very beginning."