KZolciak080909_01_X17crop230.jpgKim Zolciak is the proud momma of son Kash Kade Bierman. The Real Housewives of Atlanta star gave birth on Wednesday.

Zolciak, 34, Tweeted, "@biermann71 and I are sooo excited to tell you baby Kash Kade arrived today!!! Baby and I are doing great!!!! #soblessed."

This is Kim's fourth baby ...and second with hubby Kroy Biermann.

Their son KJ was just born 14 months ago.

Now that the baby has arrived, it's time to put that blonde wig back on and get to work!

Congrats to the happy parents!