Susan Boyle banned from singing for Oprah Winfrey

London, (ANI): Britain"s Got Talent judge Simon Cowell has banned Susan Boyle, who is all set to make an appearance on the Oprah Winfrey show, from singing for Oprah.

Susan, 48, who will take the stage on special episode of Oprah, called The Worlds Got Talent, has been asked to refrain from singing, as the BGT bosses want to save her incredible singing for her semi-final appearance on the show.

Apparently the BGT bosses are also concerned the Scots rivals might think it would give her an unfair advantage, as up to 10 million viewers are expected to tune in to the show. The show will also feature acts from some of the 40 countries where the show is filmed, including the runners up from last years BGT, Signature. Even Simon Cowell will be grilled by Oprah about the show"s global appeal.

“Simon won't be able to keep a smile from his face as the show just seems to be getting bigger and better," the Mirror quoted a source as saying.