See more from Britain's Got Talent at http://itv.com/talent
Singer and actress Bonnie was just 12 years old when she was crowned winner of Australia's Got Talent. Now, 12 years later, the star from Down Under is giving the performance of a lifetime at Wembley Arena.
Will she enchant the Superfans and Judges? Tune in to BGT: The Champions, Saturday 21st September at 8:30pm on ITV and STV.