1 SEPTEMBER 2005

No-one has ever accused Madonna of being work-shy, but turning up to film a commercial just a couple of weeks after a nasty riding fall has added fresh gloss to the singer's reputation as a driven performer.

Perhaps a little pale and more slender than usual, the mother of two was nonetheless smiling and ultra-chic in a black trenchcoat with matching sling when she arrived at Shepperton Studios in London to do her part in the new Motorola ad.

It's believed the phone giant has paid her something in the region of a million pounds for her role in the celeb-heavy commercial, which promotes a new mobile phone with built-in iPod.

Madonna broke her collarbone, hand and several ribs on August 16 by falling from a horse which husband Guy Ritchie had given her for her 47th birthday.

And though he managed to stop her getting straight back on as soon as she was discharged from hospital, it looks as though she's way too determined just to sit at home convalescing. Money cannot be the motivation - the Material Girl has already netted an estimated £20 million from advertising deals with the likes of Versace, Max Factor and Gap.

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