Keira Knightley's barnet was looking blonder and messier as she left Radio One in London yesterday. The choppy fringe and, frankly, unbrushed lengths gave her a laid back look.

Like many London girls, I think messy hair is pretty much a byword for nonchalantly cool - I mean who wants to look like they've tried too hard? On the other hand it's a fine line between effortless and just plain scruffy.

Do you think Keira manages to pull it off?

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