A straight-haired girl's got to know how to scrunch. Scrunching gives hair some texture, so it doesn't just lie there making the rest of you look bigger by comparison.
There are lots of ways to do it. Here's one:
Start with damp, conditioned hair, and apply a small amount of scrunching mousse or gel (this is actually what the products are called). Run it through with your fingers, careful not to get too much in the root area (it'll make you look greasy).
Part hair into four sections around your head. Starting at the tips of one section, scrunch it -- grab handfuls and squeeze. Work your way up to the roots. Move to the next section.
If you want some extra body, toss your head forward and do some allover scrunching upside down, while you dry with low heat. Don't dry it all the way or else you run the risk of frizz.
You can also simply air dry. There are no rules in scrunching.
Actually there's one: Don't brush it when you're done.
Simple as scrunching is, there's an even easier way to get some texture.