We all know Don’t Be Tardy star Kim Zolciak-Biermann and her daughter Brielle Biermann love to show off their hot bodies. Duh. If you got it, flaunt it, as they say. But one thing we didn’t expect was a total booty battle as the family spent time on a tropical vacay. Like mother, like daughter, because the 22-year-old’s sexy snaps were basically on par with her 40-year-old mama’s pics. It was clear there was a summer showdown goin’ on. Scroll through the gallery to get the scoop on the battle of the bums and see some hot photos of the Biermann babes on vacation.