25 Hottest Hollywood Hair Change-Ups of '09

From Nicole Richie's walk on the dark side to Kellie Pickler's red alert, rate the biggest color and cut changes!

MEGAN FOX

The action star does a Transformers-worthy red-carpet switch-up of her own on the MTV Movie Awards red carpet in '09! The previous year, she had gone for stick-straight layers, but slicked back the top and let the ends trail in loose waves for this time around.