How Long Will Kate Middleton Be in Hospital?

The duchess is reportedly doing better since being checked in with extreme morning sickness.
3:01 | 12/05/12

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Transcript for How Long Will Kate Middleton Be in Hospital?
Now, to the news breaking overnight. An incident at kate middleton's hospital in london. Two radio deejays got through to the hospital ward where kate middleton is staying and spoke to a nurse about the duchess' condition. Lara is live with the story. Good morning, lara. Good morning, elizabeth. The queen and residents here, at buckingham palace. We just witnessed the changing of the guard. And william was nearby, spending six hours with his pregnant wife yesterday. And this morning, we're hearing from some unlikely sources, the deejays that pranked the hospital. We do know that kate is in need of fluids but doing much better. Hello there. Could I please speak to kate, please. Reporter: Prince edward hospital is most likely revving up their phone security this morning, after an australian disc jockey called, reportedly pretending to be the queen and connecting with one of kate's personal nurses. When is a good time to come and visit her because I'm the queen. I would suggest that any time after 9:00 would be suitable. Reporter: It was all-smiles for william last night as he emerged from the hospital here in london, after spending six hours by his wife's bedside. His expression, much happier than when he arrived. And this morning, kate is reportedly being treated by the queen's doctors. The palace saying in a statement, she is, quote, continuing to feel better, as she battles hyperemesis gravidarum. Kate and william are grateful for the good wishes they have received. There's been an outpouring of support for the couple. And that made them feel, perhaps, a bit more positive. Reporter: Kate's parents, carol and michael middleton, spotted leaving their home in buckleb bucklebury tuesday. But there's no word on when the duchess will be released from the hospital. Some women can suffer with symptoms for the entire length of the pregnancy. We believe she's about seven to eight weeks pregnant at the moment. Reporter: Meanwhile, the frenzy of royal heir speculation continues. Oddsmakers are already taking bets on the name of the future heir. The early favorites, elizabeth, frances or diana, if it's a girl. Charles or john, if it's a boy. And one forensic artist has become an internet sensation, studying recent photos of will te, and creating these composites of what a new prince or princess might look like. Oh, my. And william and kate may be kept apart in the coming days. Military commitment in wales requires him to maintain a certain number of flying hours. And soon, he'll have to make a difficult decision whether or not to stay in the royal air force or take on the duties of a full-time royal. George and elizabeth, back to you. It's hard to believe that anybody fell for that radio deejay. And I think the girl would be cuter than that picture, too.

This transcript has been automatically generated and may not be 100% accurate.

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