1104_beyonce_singleBeyonce and Jay-Z are keeping pretty quiet about the gender of their baby -- but Kelly Rowland isn't!

She says the power couple is having a ... girl!

Kelly accidentally let the news slip while dishing to US Weekly about the difficulty of picking out the perfect present for the baby shower.

"I think HER dad [Jay-Z] is gonna give HER everything anyways," says Rowland. "All I can give HER is love."

But even if Jay-Z does give his little girl everything -- Kelly doesn't think it will make her spoiled.

"I think she'll be very well behaved," she says. "Her parents will make sure of that."

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