Zolciak, 33, was typically over-the-top look in a pre-owned, handmade Baracci gown worth $58,000. The dress was embellished with Swarovski crystals, pearls and embroidered lace. Biermann, meanwhile, looked dapper in a white tuxedo and black bowtie.
The couple, who announced their engagement in October 2010, are parents to son Kroy Jagger Biermann, who was born in May. Zolciak also has two daughters -- Brielle, 14, and Ariana, 9 -- from previous relationships.