What's Her Best Hair?

See the stars' latest cuts and color changes – and then vote on which hairstyle suits Cameron Diaz, Kim Kardashian and more

  • DEMI LOVATO photo | Demi Lovato

Credit: Justin Campbell/Startraks; Rodrigo Varela/Wireimage

Updated: Wednesday Jan 04, 2012 | 01:30 PM EST By: Justine Harman

DEMI LOVATO

Though she Tweeted that she was "bummed that my red hair didn't stay very well," the singer's vibrant new hue is a marked contrast to her formerly chocolate locks.