People.com Celebrity 'The Hunger Games' ' Jennifer Lawrence Compares Katniss to 'Alien' 's Ripley Sigourney Weaver's character has the same "fighting spirit," she says By Alison Schwartz Published on March 19, 2011 02:00 PM Share Tweet Pin Email Photo: Steve Granitz/WireImage As the official leading lady of The Hunger Games, Jennifer Lawrence knows she’s landed an out-of-this-world role – in more ways than one. Taking on the part of Katniss Everdeen, a fierce and feisty heroine competing in the ultimate game of life-or-death, Lawrence, 20, has extra special, extraterrestrial inspiration for tapping into the “fighting spirit” of her character. “Sigourney Weaver’s Ripley in Alien is the first [movie] that comes to mind,” she tells Entertainment Weekly of an older yet similarly famous heroine. And while she may not be kicking alien-butt in the adaptation of Suzanne Collins’s beloved trilogy, Lawrence knows one thing: There’s a lot of fans that will want to kick her butt if she doesn’t deliver. “I have a huge responsibility to the fans of this incredible book, and I don’t take it lightly,” she said Friday. “I will give everything I have to these movies and to this role to make it worthy of Suzanne Collins’s masterpiece.” But for fans of the book that are skeptical – perhaps about Lawrence’s older age or head of blonde hair – Director Gary Ross tells EW the choice was “the easiest casting decision I ever made in my life … She came in and read for me, and it just knocked me out.” Plus, he says, “we can easily deal with Jennifer’s hair color.”