By InStyle Staff
Apr 25, 2012 @ 10:45 am
ClassMates.Com Yearbook Archives; AP Photo/Evan Agostini

Renee Zellweger turns 43 today! Help the Bridget Jones star celebrate by taking a look back at her Hollywood transformation, from big-haired Texas belle to a red carpet stunner. Click through to see all of Renee's most memorable beauty looks.

MORE:Renee in the Front Row at Fashion WeekHow Renee Customized Her Carolina HerreraTry the Colorblock Trend Like Renee