Natalie Imbruglia - Daredevil Imbruglia Prayed On Osbourne Show

NATALIE IMBRUGLIA was left fearing for her life while filming JACK OSBOURNE's daredevil U.K. TV show - she was convinced she would be electrocuted.

The Torn hitmaker teamed up with Ozzy Osbourne's son Jack on Celebrity Adrenaline Junkie, which sees stars take on a series of challenging activities.

Imbruglia agreed to scale a mountain - but a brush with danger left the singer terrified.

She says, "I thought I was going to die for real. I should have felt safe but at a certain point of climbing a mountain, you're in a cloud and you hear a noise that is electricity - what can they do to protect you from electricity in the cloud you're in?

"So, they were like, 'Sit on your bag, it's made of rubber.' I went, 'Why?' They said, 'So you don't get electrocuted.' I was like, 'Hang on, I'm on a TV show!'"

The 34 year old pleaded with Osbourne to end her ordeal - but she was forced to carry on until the end of the challenge.

She adds, "I prayed. It was probably about half an hour and this is after two previous meltdowns begging Jack - like, 'Cut! Seriously, rescue me!' and he was like, 'From where? There's nowhere a helicopter can land', so I had to get to the summit to get off."