Uglies. One more of those teeny-bopper saves the world from a distopian future books. Apparently the first in a trilogy, except this one is doesn't even have a minor resolution at the end. That said it was at least decently characterized and there was some good world building. Basically good writing covering up for not the best plot. Got me through the plane ride okay.
I did very much enjoy So Yesterday
from the same author. Worth a look - not exactly hard-going, but fun.