It’s not the kind of mane you’d part with lightly, even if rock-style, mid-to-shoulder length hair is the look of the moment. But at the LA premiere of her new movie Whiteout on Wednesday night, Kate showed us how to have your cake and eat it – or in this case how to keep your long hair but still rock a short style – by opting for a false bob. If you want to go short but without the commitment, this is the way to do it, especially as it combines the season’s new length with its hottest style (prettily dishevelled). I buzzed George Northwood, senior stylist at Daniel Hersheson, to find out how to create the look:

‘Work mousse into clean, damp hair for texture, then dry hair, curling it under,’ he told me. ‘Tease hair underneath to build volume, fold the lengths under and secure with pins. You can either slide Kirby grips horizontally along each section you create, or push bobbi pins up in to the rest of the hair at the nape to hold the bob in place. Because the whole point of the style is to look slightly undone, it doesn’t matter if the pinning isn’t perfect.’

Leaving strands loose at the front, like Kate, will also prevent it looking too meticulous.