Beyonce has last laugh with flawless TV performance

Beyonce has exercised revenge on the internet prankster who faked a recording of her singing out-of-tune - by wowing fans with a flawless live performance on US TV.

The superstar found herself at the centre of controversy on Wednesday when American shock jock Howard Stern aired audio of Beyonce appearing to screech along to her hit song 'If I Were A Boy'.