230-kim-z.jpgKim Zolciak is expecting her second child with husband Kroy Biermann!

"Kroy and I are so excited," The Real Housewives of Atlanta star tells Life & Style. "To decide we wanted to get pregnant again and have it happen so quickly was such a blessing."

The blonde reality TV star is four months pregnant, and she has yet to learn the sex of her child. “People are going to be shocked, because nobody knows ... I’m so excited that KJ will have a little buddy.”

Zolciak and Biermann welcomed their first child, son Kroy Jagger Jr. (KJ) last May and they tied the knot last November.

RadarOnline.com is reporting Kim and Kroy are expecting a baby boy!