J.Lo: "I'm Having a Baby!"

During her concert in Miami Wednesday night — her final stop on this current North American tour — Jennifer Lopez took a moment to share something special with her adoring fans. "Marc and I are expecting a baby!" she hollered.

Of course, given the obvious baby bump that's sprouted in recent weeks, not many were surprised by the news. So what was Jen's reason for keeping so quiet about something so obvious? "We didn't want to say anything before because we didn't want to take away from the tour," was her explanation to the Miami crowd.

Jennifer, who will be entering into motherhood for the first time, though she is stepmom to Marc's three children from previous relationships, did not give away any information regarding the baby's gender or due date, though many keen-eyed observers would guesstimate a February delivery.