Beyonce does US National Anthem a capella

Destiny-Child-In-Chief Beyonce Knowles is prepping for her big performace at this Sunday's Super Bowl half-time show and yesterday she gave her own press conference.

Mrs. Z kicked off by addressing the issue on every assembled journos lips – the whole backing-track kerfuffle at US President Barack Obama's inauguration.

It had come to light that Beyonce had lip-synched. Her response?

"Any questions?"