During what turned out to be the final date on their joint concert tour, the On the 6 chanteuse admitted Wednesday night that she and hubby Marc Anthony are expecting their first child together.

''We didn't want to say anything before because we didn't want to take away from the tour, but we're expecting,'' Lopez told the privileged 10,000-strong crowd at Miami's American Airlines Arena.

As befitting a legion of fans that has been besieged with a month of baby-bump speculation, reports based on "sources close to J.Lo" and lots of secondhand bean spilling, the audience promptly went nuts.

"I hope you don't mind," Lopez said coyly, looking at Anthony.

"No, I don't mind at all," the 39-year-old El Cantante star said, planting a smooch on his wife's belly. (Which, as we've now confirmed, is harboring a bump.)

This will be the duo's first child together. Anthony has three children?two sons and one daughter?from two previous relationships.

That was where the trail went cold, however, as Lopez opted not to say when the baby is due...or how many other babies are due to arrive at the same time.