Updo's with a hat?

[Arug]

I'm going to this party and need an idea for a formal ponytail that can be worn with a hat... ideas and pictures are welcome. My hair reaches my shoulders.
Help me! I'm in a hurry...

 

[irmati]

Here's a very interesting one:
http://hairstyles.free-beauty-tips.com/updo3.shtml