With Twilight's Kristin Stewart about to recreate her life in a new film, Joan Jett is the latest style icon for those looking to project rock ‘n roll onto the red carpet.
And Lily Allen captured the look perfectly, with a shaggy ‘do that made her beautiful designer outfit look just the right amount of laidback.
Lily looks to have had her shoulder-length bob either chipped into at the ends with the points of thinning scissors or razored, both of which techniques take the weight out of hair, giving it an instant ‘lift’ so there’s more movement and texture.
It's great for thick hair which can otherwise hang heavily around the face - although it can make fine hair appear more lank. Paired with an asymmetric fringe that skims the eyes, the shape is sexy and a little bit sultry.
To dress it up, the hair needs volume, achieved by draping sections of hair over a round brush at the roots and aiming the dryer close to the hair to get root lift.
Don't forget to dry from beneath, too, which is what gives hair the greatest lift, using mousse for all-over body and a volumising spray just at the roots – we love John Frieda Luxurious Volume Thickening Blow Dry Lotion. Then quickly dry the rest of each section downwards.
Once finished, blast dry the hair all over, shaking your fingers through at the roots to loosen it up. Then quickly go over thin sections at the ends with irons so hair kicks out. Rub a finishing product – serum or texturising cream – through with fingers for separation.