'American Idol' winner Jordin Sparks and husband reveal sex of their baby

It's either a boy or a girl!

"IT'S A BOY!!!" her caption began. "We have so much to be thankful for and this is definitely at the top of the list! @_danaisaiah's gonna have a little mini me running around! We can't wait to meet him. We love you lil man!"

Sparks, 27, revealed she had secretly wed on July 16 in Hawaii in a photo spread for People magazine. In the interview, the "No Air" singer said weeks after tying the knot, she discovered she was expecting her first child.

"Once we got over the initial shock of it, just like it is with the marriage, to be able to share that this amazing thing is happening, it’s such a great thing," she said in the magazine. "We did this together!”