In the books, Katniss is desribed as having long black hair, olive skin and grey eyes. She's 16 years old and is small in stature.
Jennifer is quite tall (5'8") and obviously does not have those other physical features but nothing some hair and makeup can't fix!
All we really need to worry about is her acting! I've never seen her act, but hopefully she's good.
What do you guys think? Can she pull off Katniss? Who will be cast as Peeta??