Where can i find something similar to this?

Hi all :) Im having a grad party, and my personal... i just looove like 1920-1950 kinda clothes and style. i really wanted to find a net to wear in my hair.. , but i just cant seem to find one i really love.. and so i was wondering in christina aguilera's video "aint no other man" a href="http://www.youtube.com/watch?v=vvkwkjvnBRk" rel="nofollow"http://www.youtube.com/watch?v=vvkwkjvnB…/a where could i possibly find the first outfit shes wearing with the net AND that dress??? i absolutely love it.. do you have any websites or stores you know of that sell things similar to that outfit? also.. what material do you think that that dress is made of?? i know its an odd question but my friend my just make me my dress so, if u could guess what do you think the material is? thank you alll sooo much for taking the time to answer!