Pregnant Kim Zolciak Shows Off Bare Baby Bump (PHOTO)

Pregnant reality star Kim Zolciak posted her picture on Instagram flaunting her twin-baby bump Saturday.

 "Going swimming with the kiddos! The pool makes me feel so much lighter!" Kim wrote on Instagram, and shared the photo. She is seen wearing lacy black lingerie. "This belly #twins #excited #blessed #nofilter" she said.

Last month, Kim announced that she was expecting twins with husband, NFL Atlanta Falcons defensive end, Kroy Biermann. This would be her fifth and sixth babies. "I'm having twins and I couldn't be more excited. I was completely shocked. I had no idea," Kim told E! News. "Twins do run in the family, so I guess I shouldn't have been surprised. I can't believe I am going to be a mom to six children," she said.

Kim previously showed off her growing baby bump in July after the official announcement of the pregnancy. "You asked for it ...here is my baby bump this morning!!"

She also revealed her plans to get back into shape post-delivery. "Getting ready for the babies yahooooo one of my favorite strollers arrived!!" Kim said last week. "THIS is why I must have [Jeanette Jenkins] get me in shape after the twins!" she wrote next to a photo of Kelly Rowland on the cover of Shape magazine.

In 2011, Kim welcomed her first son, Kroy Jagger, with Biermann. A year later they celebrated the arrival of their second baby, Kash.

Kim is also a mother to two girls from previous relationships and her husband Biermann adopted them legally this July.

Thirty five-year-old Kim was a part of the "Real Housewives of Atlanta".