Jennifer Lopez has kept her glossy pink lips sealed during recent public appearances, dancing around questions from interviewers wanting to know if she's singing for two.

But her bump speaks loud and clear.

After Lopez made an appearance on MTV's "Total Request Live" on October 8 to promote her new CD, "Brave," cohost Damien Fahey told Us that her condition was obvious.

"I've been around a lot of pregnant women. She walked around like a pregnant woman, sat like a pregnant woman, and stood like a pregnant woman," he says. "If I were a betting man, I'd definitely bet she was pregnant."

Indeed, Us has confirmed from multiple sources that Lopez is about four months pregnant with her first child. Or children -- a source tells Us Weekly Lopez's mother, Guadalupe, 61, "is proudly telling people she's having twins."

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