The 38-year-old Don't Be Tardy star posted a pic of her bikini butt to Snapchat on Sunday with a body confident message. "This body birthed six kids and I'm damn proud!" she proclaimed. "Four kids in 30 months!!
Zolciak also called out trainer Jennifer Stanno for helping her stay fit.
In the past, she's credited waist trainers as contributing to her small frame. "My husband usually hooks it for me because I like mine pretty tight," Zolciak told ET about her corset. "I get a lot of negative comments -- 'You've gotten too small!' -- [but] how can your waist ever be too small? That's what I'd like to know."