Jennifer Lawrence Shows Off Her Katniss Hair on ‘Letterman’ (PHOTOS)

'Hunger' vs. 'Twilight'
How the two series are different, but very similar.
First, a big Entertainment Weekly display to show off her Katniss look for Hunger Games, and now Jennifer Lawrence got to show it off in real life.

The   starlet hit Late Show with David Letterman on Thursday sporting her darker locks to promote X-Men: First Class, but really, all of the hardcore tweeners were thinking about her starring role in the upcoming sure-to-be-blockbuster Hunger series.

When Letterman asked about Hunger Games and if it will be a vampire movie a la Twilight, Lawrence snapped back with a little jab at the blood-suckers.

“It’s a very violent futuristic movie where kids are selected from their home districts to fight in an arena to the death … but we don’t drink blood. That’s sick,” she joked. Watch her in the clip below:

Lawrence landed the lead female role, and will be flanked by two hotties in young Hollywood: Josh Hutcherson and Liam Hemsworth.