Aguilera: 'I feared for my unborn child's life'

Christina Aguilera was crippled with fears for her unborn child during her world tour earlier this year - she wore a carefully-hidden heart monitor in case of emergency.

The pop star admits she was terrified when she found out she was pregnant during the seven-month 'Back to Basics' tour, which ended in May, and would have quit if doctors hadn't come up with an ingenious way of reducing the risks.

She says: "I was paranoid. There are so many things that could go wrong - somebody could slip, somebody could fall, I could fall. There was no way in hell I was going to jeopardise my baby for my show.

"I didn't want to make the audience uncomfortable, like, 'Pregnant lady onstage! Is she going to be okay?' But I had to announce it to my band and my dancers, because I wanted to make sure they had my back."

Aguilera is expecting her first child with husband Jordan Bratman early next year.