This outfit is so DIY it's not even funny. Fishnets, short-shorts, a tank top, a denim vest and an army helmet are easy to find at your local vintage shop and/or your own closet.
You don't need Leia's intricate two-piece to look like Jabba the Hutt's slave. Just grab a tube top, a bikini bottom and a tiara. If you can get a friend to stuff themselves in a Jabba comforter, people will know who you are right away.