Mariah Carey and Nick CannonAlthough she's been the focus of incessant pregnancy rumors, Mariah Carey revealed Monday evening that her dog is the real new mama in the family. "ChaCha just had her baby! Its a giiirl!!! Anybody want a beautiful Jack russell puppy?! Jk: ) lol," the singer posted on Twitter.

Despite the announcement about her pup, Carey still hasn't addressed why she abruptly dropped out of Tyler Perry's new film last week, setting off a firestorm of speculation that she is pregnant. "She is not doing the movie because her doctor advised her not to," her rep told Us Magazine last week. "More than that I cannot comment further."