Madonna has signed a £1 million deal to advertise mobile phones for Motorola, alongside a galaxy of stars including rock legend Iggy Pop.

The ad will see a number of musicians squeezed into a phone box, to promote Motorola’s phone with built in iPod.

A source said: “There’s talk of the White Stripes, the Bravery and Alanis Morissette being part of the ad as well. It will be very trendy and keep Madonna at the cutting edge. ”

The ad is Madonna’s first project she has taken since her horse riding accident last month. The blonde singer, who suffered cracked ribs and a broken collar bone in the fall, turned up to the studios with her arm in a sling.

The Material Girl has already starting filming the commercial.