The 38-year-old's bust proved a little too much for her sports bra when she went for a jog with hubby Kroy Biermann on Monday.
The "Don't Be Tardy" star took to Snapchat to document her workout, as well as the wardrobe malfunction it caused.
An initial snap showed the couple jogging side-by-side with the caption "Relationship goals." Zolciak got her heart rate up while keeping pace with her pro football player hubby.
"Sweating bullets," she captioned a selfie that showed off her perspiration-covered face and cleavage.
But it appears her sportswear couldn't handle her, ahem, ample assets, as the reality star later posted another pic of herself holding up the bra that her bust had busted.
“My bra broke so I gotta hold it,” she explained as she continued to jog.
The mother-of-six had better luck with the crocheted bikini she wore during her family's poolside Labor Day celebration.
True, Zolciak wasn't working out in the skimpy two-piece, but she did shake her stuff. The blonde twerked and pursed her lips for the camera, which then panned to her kiddos.
The family pool party came a few days after Beirmann was cut from the Buffalo Bills. And while we're sure Zolciak is disappointed on her hubby's behalf, she's probably glad that her other half will be spending more time at home. After all, when he left for New York to train with the team, she was vocal about struggling with his absence.
"This has been one of the hardest days ever for me,” she wrote. "My best friend, my everything left this morning to play for @buffalobills… It was hard to say goodbye!"
Too bad Zolciak's bra isn't as supportive as she is!