The expectant mum "is ready to go," a friend tells PEOPLE

By Simon Perry
Updated May 01, 2015 06:05 PM
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Credit: Beretta/Sims/Rex

Princess Kate is tired of waiting, too.

The expectant mum, who has passed her late-April due date, “is ready to go,” a friend tells PEOPLE.

But even as the world grows increasingly impatient – and more than a little mad, judging by the scene outside the "Limbo" Wing – Kate remains her usual keep-calm-and-carry-on self, says the friend.

“She looks great and she has seemed completely chilled out about it all,” says the pal.

Still, she’s not in a bubble when it comes to the mounting frenzy surrounding the arrival of her second child.

Like her husband Prince William, she reads the news both online and in the papers – with much of the current coverage centered on every last detail about her upcoming delivery.

“She’ll be thinking, ‘Leave me alone, the baby will come when it comes!’ ” says the pal.

Keep reading People.com for more on the royal baby.

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