Madonna bares her butt at Sandy show

Madonna found a saucy way to raise money for victims of superstorm Sandy by baring her butt onstage as she asked for donations during her show in New York City this week.

The pop superstar went to visit relief workers at Far Rockaway in Queens on Monday to publicise aid efforts in the hours before she took to the stage for her MDNA show at Madison Square Garden.

Madonna opened up about her experience at Rockaway Beach during the concert and she paid tribute to all those who have stepped up to help in the aftermath of the storm.

She told the audience, "We... have to call attention to the fact that New York has been devastated by a hurricane and I think that people really underestimate the damage that has been done. The homes, the jobs, the livelihoods that have been lost... There are many wonderful people, some of them here tonight, who have started amazing initiatives and have been giving help to people who have nowhere to live, who have no food and nowhere to sleep.

"A big thank you to all these people... I went down to Rockaway Beach yesterday with my children and we saw what was going on down there and we saw the destruction and it was really sad but we also saw amazing acts of humanity, people working hard, handing out food, blankets, giving love... I wanna give a big thanks to those people too. We owe them a lot. New York owes them a lot."

She also took off her top to reveal the words 'No fear' scrawled on her back and pulled down her trousers, telling the audience "(I am) showing (my) naked a** for Hurricane Sandy victims" and encouraging them to throw cash donations at the stage.

She added, "If you are going to look at the crack of my a**, you better raise some cash."