Aussie newschick craps herself after realising she's on-air

There was no hiding the surprise on the face of ABC News newsreader Natasha Exelby after she realised she was live on air, when she clearly thought she wasn't.

Exelby appears to be playing with a pen and is lost in deep thought before either a word in her ear, or a camera's live red light, alerted her to the fact the nation was watching.

It took mere minutes for the news blooper to go viral and now the little known newsreader from Australia has her face planted on the front of news websites around the world.

However, it's not the first time Exelby's on-air composure has gone viral.

Before working at the ABC, Exelby was a newsreader on TEN's late news and it was there that her first newsreading faux pas took place.

A very poised and composed Exelby was ready to deliver the evenings headlines when the show's anchor threw her a curly question and it was all downhill from there.