Rumors are circulating at the North Shore University Hospital in Manhasset, N.Y., that superstar Jennifer Lopez had checked in under a false name on Tuesday, presumably to give birth. While hospital spokesperson Adina Conn denied it — "She is not in the hospital. She is not here under a pseudonym," — another hospital insider tells newsday.com that J. Lo is "in the house." Recent hospital visitors have apparently heard staff talk about "the J. Lo" maternity room, which is more luxe than the average ward. Jennifer and her husband, Marc Anthony, are said to be expecting twins but both their reps are denying that the singer is in labor. Considering how long it took them to confirm the pregnancy, don't expect news of the birth 'til the babies are at least a year old!