It’s a Girl for Mariah Carey!

 Theo Wargo/

It's a girl for Mariah Carey!

Er, well for her dog, at least.

"ChaCha just had her baby! Its a giiirl!!! Anybody want a beautiful Jack russell puppy?! Jk: ) lol," the singer, 40, posted on Twitter Monday.

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Carey herself is expecting her first child with husband Nick Cannon, 29, a pal tells the new issue of Us Weekly. "She's in the early stage of pregnancy" and waiting until her first trimester to share the news, the friend adds.

Cannon gushed about his wife's fuller figure — which she showed off while performing at a Wal-Mart stockholders’ meeting in Arkansas Friday — when chatting with fans May 30 in Malibu.

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"Her bump is bigger. You can almost see it now…I'm very excited!" he beamed.

Cannon later softened the news a bit, posting on Twitter last Wednesday, "If & when my wife is ready to make ANY announcements about private matters she will do it personally."

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The next morning, on his radio show, he added, "I'm pretty sure that when my wife is ready to make any announcement it won't be to the media, to the public, first," he said. "She'll tell her family, she'll tell her friends, and then, you know, when she's ready to share with the rest of the world, who is her extended family and friends, then she'll let everybody know."

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