I was recently at a Convention (Oz ComicCon - Melbourne) where I was staff and couldn't wear any costumes, but still wanted to wear something costume-y and reminiscent of Leia.
I came up with this! It has the Slave Leia colour scheme of burgundy, grey, taupe, and gold (I know copper would be more accurate, but gold was easier to find and match).
EVERYTHING minus the earrings and pants was found on eBay. I made the pants (originally wanted huge flares, but later thought slits up to the knees would be more Leia-like
It was fun to wear, and I didn't feel so bad about not being in costume