How can i stop my hair from doing this?

I have normal hair but the thing is that their just below my neck unfortunately they curve in at the bottom and kinda makes it look weird like its straight from the top until my ear and then there is a BIG curve it looks really bad... i can straighten them and fix that but i want my hair to look like this:

http://i62.photobucket.com/albums/h96/ch...

http://www.thehiltonfiles.com/wp-content...

^the girl with black hair (nicole richie)

How can i do this? i am growing my hair but for the time being how can i make it so it looks like that and not sticks together or goes curvy and stupid on the ends?

How can i stop my hair from doing this?

You could buy ceramic hair straighteners. A lot of girls are using them at the moment (I don't currently have any, although I am thinking of getting some). You could search Yahoo! Answers for them. Others have posted links with the brands that they find are best and instructions on how to use them.

I'm sure it is how the Olsen twins get that look (in the photobucket image you posted). Instead of using them just as a straightner you can wrap your hair around them to create curls.