Don't mess with perfection? That's not a rule Keira Knightley believes in. "She's quite up for doing different things," notes her longtime hairstylist, Ben Skervin. Often, he says, the star just feels like trying something new. "I'll get a call: 'You weren't around yesterday, I I got my hair cut off!'"
MORE SECTION GALLERIES
Transformations: Michelle Williams
Call it the power pixie: going short when she did was as brave as it was becoming.
Transformations: Scarlett Johansson
She seems never to have met a hair colour or an eyeshadow she wouldn't try...