See the Incredible Evolution of Kim Zolciak-Biermann's Post-Baby Body

It's been two years since Kim Zolciak-Biermann welcomed her twins, Kane and Kaia, into the world. But the Don't Be Tardy mom must be feeling nostalgic, because she recenly headed to Instagram to reflect on that time in her life — and in the process, revealed how she was able to get back in shape following their November 2013 birth.

In a series of photos from before and after she gave birth to the pair, Kim revealed how dramatically her body changed, and that breastfeeding the twins helped her shed the weight. "First picture was 2 days before I gave birth to my twins on Nov 24, 2013 then 4 days after, then 11 days after and the last pic is a month after!" she wrote. "Breast feeding is not only great for the baby but it shrinks your uterus quick (and those after pains are no joke). I had 4 kids in 2 1/2 years! KJ was 30 months old and Kash was 15 months old when I brought Kane and Kaia home! Still blows my mind! #NaturalDeliveriesALLOfThem."

Check out some more vintage Kim, below.