How do you braid the top of your hair? like Lauren Conrad?

I really love this style a href="http://www.cupcakestastenice.com/wp-content/uploads/2008/05/lauren.jpg" rel="nofollow"http://www.cupcakestastenice.com/wp-cont…/a but i cant seem to do it. If you could give me help or instructions on how to do this then that would be great. THANKS