Old-Hollywood hairstyle for long hair

This is about prom, but in the prom forums, it doesn't work out too well.

But the theme for prom is "Old-Hollywood" and I would like to do some kind of updo. But my hair is really long and I can't find anything for my hairtype.

My hair goes all the way down to my lower back, and it's pretty thin. Here is my hair (it's a little bit longer now): http://i3.photobucket.com/albums/y60/sassafrashere4u/DSC0001 2.jpg

And This is my dress for prom: http://www.betseyjohnson.com/shop/shop_detail.asp?Pid=318915 00&Cid=1011

Any ideas/suggestions are greatly appreciated.

Thank you so much!