Just 10 months after giving birth to her first child with NFL defender Kroy Biermann, 'Real Housewives of Atlanta' star Kim Zolciak has announced Tuesday she is pregnant with baby No. 2.

[Kroy Biermann] and I are happy to announce YES WE ARE PREGNANT! she wrote on her official Twitter page.

The reality star confirmed to Life & Style that she was 4 months along.

Kroy and I are so excited, said Zolciak to Life & Style. To decide we wanted to get pregnant again and have it happen so quickly was such a blessing.

Zolciak, 33, married Biermann, 26 in a lavish ceremony in November. The ceremony was captured by Bravo cameras for her new reality show 'Don't Be Tardy for the Wedding that will premiere on April 26.

She gave birth to a baby boy, Kroy Jagger (KJ) in May. Zolciak hasn't revealed the gender of baby No. 2 yet.

People are going to be shocked, because nobody knows, she said. I'm so excited that KJ will have a little buddy.

Zolciak has always wanted a big family. Shortly after her son's birth, Zolciak said she definitely would like one more child.

She has two daughters - Brielle, 15, and Ariana, 9, from a previous relationship.

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