Kim Zolciak Bikini Photos: 'Don't Be Tardy' Star Shows Off Post-Baby Body In Two-Piece Swimsuits

Kim Zolciak is back to her pre-baby size and showing off her slimmed down frame on Instagram.

Along with a set of new photos, Zolciak revealed to fans that she was back to her pre-baby body -- and that she is now the same size she's been for her entire life.

"Obsessed with @beachbunnyswimwear took my boys swimming today!" Zolciak wrote on Instagram, along with the first photo of her bikini body. "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."

After giving birth to her twins, Kaia and Kane, in Nov. 2013, the Don't Be Tardy star shocked fans when, just nine days later, she shared a photo of herself appearing to have lost nearly all of her baby weight. In the months that followed, Zolciak continued to lose weight and now, with the help of weight loss supplement Xenadrine and regular exercise, she has her pre-baby body back.

"Another @beachbunnyswimwear I tried on today!!!" Zolciak said with a second photo. "Im obsessed with swimsuits! I won't even tell u how many I own!! #beenthesamesizemyentirelife Even after 6 kids!! #grateful #curvalicious."

In addition to her twins, Zolciak is also mommy to Kroy Jr., 3, Kash, 23 months, Ariana, 13, and Brielle, 17.

Last month, a source spoke to E! News, claiming Zolciak has kept off the baby weight by taking Xenadrine and eating healthy. According to the source, Zolciak eats a lot of fruits and vegetables and focuses on her figure, rather than her actual weight.