grunge style: plaid
As seen here, plaid is a cool counterpart to a laid-back look. The cut of the shirt is an interesting play on the button down and plays nicely with her ripped jeans. I particularly like that the look also has a dash of traditional luxury courtesy of the Louis Vuitton clutch. The great thing about plaid is that it is also a versatile styling item - it can read polished, preppy, elegant, sharp, and, of course, grunge.