It's the hoax being heard around the globe.
Pretending to be the Queen, a brazen radio DJ called the hospital where pregnant Kate is being treated for acute morning sickness, and got intimate information about her condition.
The DJ called the hospital saying, "Kate, my darling, are you there? Hello, I'm just after my granddaughter, Kate. I want to see how her little tummy bug is going."
Kate's nurse said, "She's sleeping at the moment, and she has had an uneventful night."
The stunt is sparking outrage. Headlines blared: "Palace Fury as Radio Pranksters Dupe Nurse" and "Security Blunder!"
The hospital in London has launched an investigation, with a spokesman calling it "a foolish prank call that we all deplore."
The prankster, Mel Greig, hosts an Australian comedy show. She was joined by her co-host, Michael Christian, who pretended to be Prince Charles. Even the DJs were shocked that the hoax actually worked.
Amazingly, they were patched right through to Kate's private nurse.
Grieg said, "Oh hello there. Could I please speak to Kate please, my granddaughter?"
Hospital operator: "Oh yes, just hold on, ma'am."
Christian said on the air, "Are they putting us through?"
"Yes," said Greig.
"If this has worked, it is the easiest prank call we've ever made," said Christian.
But Kate's nurse clearly bought it, revealing details about her condition that no one's heard yet, saying, "Sleep is good for her. She's been given some fluids to rehydrate her because she was quite dehydrated when she came in. But she's stable at the moment."
But the duped nurse continues to open up about Kate, even telling them when to come visit.
Kate's nurse responded, "I would suggest that any time after 9 o'clock would be suitable because the doctor will be in in the morning, and we'll just be getting her freshened up in the morning."
Christian said, "Lovely, but they are all ok? Everything is all right?"
"Yes, she's quite stable at the moment. She hasn't had any wretching with me since I've been on duty, and she has been sleeping on and off. I think it's difficult sleeping in a strange bed as well," said the nurse.
"Yes, of course, it's hardly the palace, is it?" said Christian.
Greig chimed in, "It's nothing like the palace is it, Charles? And when are you going to walk those bloody Corgis?"
Now the DJ's are apologizing: "We were very surprised that our call was put through. We thought we'd be hung up on as soon as they heard our terrible accents. We're very sorry if we've caused any issues and we're glad to hear that Kate is doing well."
CBS News correspondent Mark Phillips spoke to INSIDE EDITION from the hospital.
"It's embarrassing. The hospital just said it's a floor nurse who thought it was the Queen, and so provided her with the answers as one would if it were the Queen."