Boyle has been promoting her album with appearances around the world
Talent show star Susan Boyle has held on to the top of the US album chart for a second week after selling a further 527,000 copies of her debut album.
The Scottish singer is likely to retain her chart position for a further week, according to trade magazine Billboard.
It sets Boyle - who also holds the UK number one - on course to secure the best-selling US album of the year.
Boyle must beat current front-runner Taylor Swift, whose album Fearless has sold 2.5 million copies to date.
Christmas number one
There are four weeks left to run in the 2009 album chart, and analysts predict Boyle will be able to outsell country star Swift.
In her first week of release in the US, the singer shifted more than 700,000 copies of I Dreamed A Dream.
Next week it is likely to sell a further 600,000 copies and claim a third week at number one.
Albums released late in the year have previously overtaken established big sellers in the US, including Josh Groban's 2007 release Noel, which sold 3.7 million copies and pipped the High School Musical 3 soundtrack to become the year's best-selling album.
Meanwhile in the UK, Boyle's record remains the bookmakers' favourite to claim the Christmas number one slot.
According to Ladbrokes, her odds currently stand at 1/14, ahead of Leona Lewis at 5/1 and Westlife with odds of 12/1.