We've had a lot of jaw dropping moments on reality talent shows in the last couple of years, and Susan Boyle's first appearance on 'Britain's Got Talent' was one of them.

Ms Boyle became an instant celebrity when she opened her mouth to sing 'I Dreamed a Dream' from 'Les Miserables' in 2009. She was an unlikely candidate to become a worldwide superstar, and she has since sold over 20 million records. 20 million, y'all. Her humbleness has endeared her to millions of fans, and she no doubt made many more on her first appearance on 'America's Got Talent - The Champions' last night on NBC.

Judge Simon Cowell was clearly delighted to see her again, and she wowed the crowd with her version of the Rolling Stones 'Wild Horses'. She got the 'Golden Buzzer' to move on in the competition, and we are looking forward to seeing her take over America with her charm and beautiful voice once again. It's hard not to like someone who is so unassuming and respectful. You go, girl!

Check out her original appearance on 'Britain's Got Talent', and her performance last night, which has already been viewed over a million times, below.