Kim Zolciak loves flaunting her growing baby bump.

In a new photo, posted on Sept. 30, the Bravo reality star took off her top and showed off her growing pregnancy curves via Instagram.

Wearing only a black bra and sweatpants, Zolciak captioned the pic: "Wiggin it to Walmart this morning!! This belly is soooo heavy!!!! Not too much longer! #twins #thankgodforsweats."

In less than 24 hours, the picture was liked more than 21,000 times and received more than 700 comments.

Kim Zolciak, Jessica Simpson, Vanessa Lachey: Bikini Baby Bump PHOTOS 

In August, the 35-year-old announced she was expecting twins with husband Kroy Biermann.

"I was completely shocked. I had no idea. It was a natural conception, but twins do run in the family, so I guess I shouldn't have been surprised," she told E! News. "I can't believe I am going to be a mom to six children. It's going to be very busy but it's a dream come true."

The Don't Be Tardy stars are already parents to sons Kroy Jr., 2, and Kash, 1. NFL player Biermann legally adopted 16-year-old Brielle and 12-year-old Ariana from Zolciak's previous relationships.

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