Keira KnightleyOne minute a star's all laid-back - bordering on unkempt, even...

The next they're hot to trot and raring to go.

It's all in a day's wardrobe for our celeb pals.

But which look do you prefer?

You see, those in the showbiz know have more bling outfits than you could shake a diamante-clad stick at.

But that doesn't necessarily mean they'll always be prepared to wear them.

In fact, most starry types are more than happy to kick back in trackie bums or the latest boho ragmataggle of togs...

Take Keira Knightley here, who's transformed from pavement slouch to sleek senorita within one quick shake of a well-dressed tail.

Yet sometimes the daytime celeb look is actually the one we like more - click into the gallery below to decide which style is most up your alley...