Susan Boyle will appear on NBC's Today Show to promote her debut album
Britain's Got Talent star Susan Boyle's debut album, I Dreamed A Dream, is to be released later.
The recording has already become the biggest CD pre-order in the history of global online retailer Amazon.
The Scot is set to appear on America's premier breakfast TV programme, the Today Show, and is favourite to have the Christmas Number One album.
Boyle became a star after her April appearance on Britain's Got Talent. She eventually finished runner-up.
The 12-track album was named after the song from the musical Les Miserables that made her famous.
The record is a mix of pop covers such as You'll See by Madonna and The Monkees' Daydream Believer, as well as Christian stalwarts including Amazing Grace and Silent Night.
Bookmaker William Hill said it was so sure Boyle, from Blackburn, West Lothian, would achieve sales of one million by Christmas it would only offer an even money bet.
The album is hot favourite to be Christmas Number One
And the firm has installed her 6/4 favourite to have the Number One album at Christmas, ahead of stars such as Leona Lewis, Rihana and Take That.
After an appearance on Sunday night's X-Factor on ITV1, Boyle was set for a tour of the US, starting off in the NBC studios for the Today Show.
Amazon said Boyle's album was the biggest CD pre-order in the 14-year-history of its website.
Julian Monaghan, head of music buying at Amazon.co.uk, said: "Just eight months ago, no-one was aware of the talents of Susan Boyle.
"Now, she has generated more Amazon pre-order CD sales globally than any other artist.
"That is an incredible achievement and is testament to the fact that she has captured the hearts of people all over Britain, America and the rest of the world."
Steve Barnett, chairman of Boyle's record label, Columbia Records, part of Sony Music, said: "One of the things that is so unique about Susan Boyle is her ability to touch people around the world.
"We're excited that I Dreamed A Dream holds the new record for global pre-orders and that Amazon's customers have supported her album in this way."