Tone it down, Miley told

Miley Cyrus is set for a performance on reality show "The X Factor" Sunday but the singer has been asked to tone down her act during the show.

"The X Factor" bosses are nervous after the 20-year-old's recent controversial twerking and joint smoking on stage and therefore they have asked her to subdue her act on the family show.

"Miley seems to be on a mission to be as controversial as possible, so everyone's a bit nervous. She's been warned to tone it down for 'The X Factor'," dailystar.co.uk quoted a source as saying.