"Don't be Tardy" star Kim Zolciak decided to share a photo of her growing baby bump via Instagram over the weekend.

The reality star who recently revealed that her husband, Atlanta Falcons defensive end Kroy Biermann, adopted her two daughter Brielle, 16, and Ariana, 12, snapped a picture of her belly while she took a break from her workout.

On Saturday Zolciak posted the picture of herself protectively cradling her stomach while wearing a black sports bra and grey sweat pants with her blond hair in a messy updo featuring the caption, "You asked for it ... here is my baby bump this morning!"

The former "Real Housewives of Atlanta" star is already the mother four including her two daughters from a precious relationship with the addition of two boys from her current marriage, Kroy Jr., 2 and Kash Kade, 11 months.

Back in June a source told Us Weekly that "Kim loves being pregnant," and went on to say, "She really wants a little girl."

"Brielle and Ariana are older now, and Kroy wants a girl of his own."

Last week Biermann told E! News why he decided to adopt Zolciak's girls, the football player explained, "Our careers are our priorities, our kids, our health, our happiness...Before Kim and before the girls and before the boys, I lived a pretty regimented life.

"I'd wake up, eat breakfast, go to work, come home...it was pretty normal. Now, my house isn't going to be as clean as it was before, but it's not important. Those things are not important and it's all about prioritizing and understanding."

Zolciak and Biermann married back in November 2011 and are expecting their third child together.

What do you think of Kim Zolciak expanding her family so quickly with Kroy Biermann? Leave us your thoughts below.