PHOTO: Kim Zolciak Flaunts Baby Bump in a Bikini

The expectant mom shows off her svelte physique.

By Sabrina Ford Sep 16, 2013, 2:57 PM ET

How to Watch

Catch up on Don't Be Tardy on the Bravo App.

Kim Zolciak showed off her baby belly two months ago when it was just a bump. Over the weekend, the Don't Be Tardy… star, who is expecting twins, shared a new selfie on Instagram, revealing an overall svelte pregnant physique and growing belly.

Wearing an itty-bitty-teenie-weenie black and white bikini, Kim writes in the photo caption that she is headed to the pool with her children because it "makes me feel so much lighter!"

When Kim gives birth to her twins it will bring the grand total to six children for her and husband Kroy Biermann. Kroy officially adopted Kim's daughters Brielle and Ariana earlier this year.