First it was the haircuts, then their fashion choices, and now Katie Holmes and Victoria Beckham have been pitted against each other once more - this time in new ad campaigns.

Appearing in a series of shots for Miu Miu - Prada's more affordable clothing line - Mrs Tom Cruise looks completely fantastic! A world away from her casual daywear - or even her usual red carpet look - Katie's glamorous and somewhat androgynous photos are really striking.

There's no question that this foray into the world of fashion advertising is a resounding success that will generate lots of publicity for the brand - and I do hope it will be the start of something new for the star.

Meanwhile, unveiled on the same day were pics of her pal Victoria Beckham, starring in an underwear campaign for Armani. Mum to three kids, there is no denying how fantastic Victoria looks - though of course she has shown her edgy side before in the Marc Jacobs ads.

Nevertheless the photos are beautifully shot, and Victoria looks absolutely amazing... but, for bravely branching out into new territory, Katie gets my vote this time!