Janice DickinsonJanice DickinsonOn the outside, I'm A Celeb... stars are preened and poised.

But a few days in the wild and it's a very different story.

Stage One: our brave celebs arrive at an Aussie hotel - hair glowing, white teeth to the forefront and fake tans akimbo.

Stage Two: they descend into the outback - it's hot, it's humid, there's nowt but worms to eat and one shared toilet between them.

Say what you like about titillating shots of stars having a wash - stuck in that environment for any length of time and they're bound to get grubby.

And that's what makes I'm A Celeb... so compulsive.

Seeing the likes of Gemma Atkinson and Janice Dickinson descend from their former glam selves to new, feral beings they never knew existed - now that's priceless viewing.

Get a wee taster of the action and watch this year's stars transform from glam to grubby right here.