Sharon Osbourne is refusing to turn off her cellphone as she waits for a call from son Jack alerting her to the fact her first grandchild is on its way.
 
On Thursday, the reality TV star taped an interview with Ellen DeGeneres, which will air on the comedienne's show on Monday, and she admitted she's a bag of nerves as she waits for news about Jack's baby with fiancee Lisa Stelly.
 
She says, "Like its Grandma, it's late. I'm always late and this baby is late... It could be (born) any second."
 
But she's prepared: "I've got the kettle on. I've got towels. I've got everything ready."