Six kids later and Kim Zolciak's body still looks like this.

The former "Real Housewives of Atlanta" star took to Instagram on Tuesday to show of two new Beach Bunny bikinis she recently purchased ... and her amazing physique.

"Obsessed with @beachbunnyswimwear took my boys swimming today! They missed daddy throwing them up in the air and when I attempted to do it ... Well.. Let's just say they didn't go very far!! #nomakeup #natural," she posted along with the photo on the left, where she's also sporting a fresh face.

"#beenthesamesizemyentirelife Even after 6 kids!! #grateful #curvalicious," she said along with the second photo -- which shows her in a strapless black and neon green two-piece.

"I take Xenadrine for energy to work out and do an hour of cardio each day," she told Life & Style of her weight loss back in January. The reality TV star says she put on 50 pounds during her most recent pregnancy with twins Kaia and Kane.

And she looks just as good from the back too! Check out her post-baby booty here.

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