When Jennifer Lopez's husband, Marc Anthony, opened the first-night show at the Taj Mahal in Atlantic City on Sept. 28, he seemed to be teasing the audience with cryptic hints. "This is such a special evening on so many levels," he told them. "You are the first people to witness this new part of our lives."

But the baby buzz was all but confirmed when Jennifer, famous for performing in tummy-revealing costumes, took to the stage in not one, but five loose-fitting, bump-hiding get-ups.