What's the name of the long wavy/curly hairstyle Beyonce has in her 'Sweet Dreams' Video?

Basically I want to be able to describe the wavy hairstyle Beyonce is styling to a hair-dresser / hair-stylist... the one im talking about it the longer style you see in the opening parts and the bit with the mirrors!



here's the video in case you need a reminder(!)http://www.youtube.com/watch?v=hWq3kobYO



I want to be able to describe this style %26amp; have no idea where to start! i would like it to turn out something like what she has (obviously) minus the extra styling stuff %26amp; colouring.



Just an idea of how to get my hair like this would be nice e.g. feathering / layers or some other hairdressing term etc... basically im looking for how you could create this style and how i can explain to the person cutting my hair!



I don't have a clue where to start and cant find a good enough picture! All help is much appreciated as i am a complete novice when it comes to hair! =)What's the name of the long wavy/curly hairstyle Beyonce has in her 'Sweet Dreams' Video?
i dunno