A cotton blouse with lace, embroidery and puffed sleeves
+ white cotton skirt
+ a pretty cotton nightie with embroidered yoke
+ a bolero style cardigan (later changed to a shawl because it was a very hot night)
+ a few metres ribbon
= one Pride & Prejudice costume!
I wore the blouse under the nightie (they turned out looking identical in colour), the skirt as a petticoat (since the nightie is very fine) and a ribbon tied under the bust for an empire waist. The shawl was recently given to me by Mum, she didn't want it and it turned out to be perfect for the costume. I had gloves for dancing (from the $2 shop) and a wooden fan (also the $2 shop) and my bonnet I made last week, and some pink ballet-style flat shoes.
So altogether my costume cost me only $12.00, which I was pretty happy about.