The crop is a tough one - it comes up a hair trend every once in a while, but not everyone can pull it off. If you ever even considered chopping off all your locks, now is definitely the time - the crop is high on the list of 2008's hair trends as well as 2009's hair trends.
If Katie Holmes' hairstyle shows us anything, it's how much of a difference styling can make to the crop. In 2008, it's best with a bit of length that can be messed up and tousled a bit - in the guise of effortless, boyish bed-hair. You only need to look at the following photos to see how much less effective the crop is when unstyled.