Renee Zellweger through the years

Published On: Jan 20 2012 03:43:11 PM EST  Updated On: Apr 19 2012 03:43:32 PM EDT
Renee Zellweger in 2011

Thomas Peter/Reuters

Oscar-winner Renee Zellweger, who celebrates her 43rd birthday on April 25, has become one of Hollywood's mainstays over the years. Let's take a look back at her career so far.