What to wear for a party?

[Dork]

I am going to a party and i have no idea what to wear
i have a limit of £100 to buy a dress and shoes
I want a kind of rocky look and i was looking at some platform type black shoes
but i have absolutely no idea
any suggestions would be great
thanks!
x

 

[Stacy B]

Check on Delias.com. They have really cute party dresses.