Fergie of the Black Eyed Peas performing at Live Earth London concert at Wembley Stadium. London, England - 07.07.07

The 32-year-old fled the stage before the band announced to the crowd of 10,000 that she was sick and the show would be cancelled.

The band are currently in Mexico and Central America on their Monkey Business tour.

The tour organiser has promised to reschedule the concert sometime over the next three months and offered refunds to unhappy fans.

Source: WENN