The world domination of Scottish singing hopeful Susan Boyle continued with her first appearance on Oprah.

The Britain's Got Talent star told chat show queen Oprah Winfrey that the global fanbase achieved through her audition on the show was "like a dream come true".

Her appearance on the daytime programme accompanied that of Simon Cowell who spoke of his shock over Ms Boyle's voice.

He told Oprah: "This lady came up, and I'm thinking; 'This will take five seconds and I can go have a cup of tea'.

"That changed when she began to sing I Dreamed a Dream from Les Miserables.

"She knew we were going to have that reaction and just to see that look of satisfaction on her face midway through - it was one of my favourite moments," Cowell said.

The performance was posted on Youtube and before long, the 47-year-old Scottish singleton was a global phenomenon.

Speaking from her home in Scotland, Ms Boyle said that despite the attention, she hasn't succumbed to pressure to radically change her appearance.

She said that her friend helps her with make-up. "I mean, that's hardly a makeover," the singing hopeful added.

Ms Boyle also spoke of the reason she first began to explore her vocal talents: "I was kind of slow at school, so getting something like singing was a good way of hiding behind that and so boosting my confidence."

Cowell spoke about how TV talent shows have the power to transform people's lives.

He said: "It gives the underdog a shot, and I think it's brilliant. The fact that we're allowing the public to make the decisions most of the time is a really good thing."