Renee Zellweger attended the 2014 ELLE Women In Hollywood Awards last night (Oct. 20) and we almost didn't recognize her.

The Twitter-sphere was sent into a frenzy when new photos of the 'Chicago' actress surfaced on the web. Whether it's the product of different makeup, lighting, or something else entirely, we can't quite put our finger on what's different about Renee, but there has been an obvious change in her appearance. The above photos show a difference of a mere four years -- the first was taken at the CNN Heroes: An All-Star Tribute in Nov. 2010, while the second is from last night's Elle event.

Check out some more photos of the drastic difference below:

Frazer Harrison, Getty Images
Frazer Harrison, Getty Images
Michael Buckner, Getty Images
Frazer Harrison, Getty Images

Big difference, no?

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