I'm going to try and make the TFA Leia for Comic-Con at the end of October. Now since there are very few reference pictures of it available I'm also seeing this as a test run, since I've never done a jumpsuit before, and then I could use it to remake a better and more accurate version.
Anyway the photos that I've found are:
This is what I'm going for.
To me it seems to be a fairly thin and soft material, looking at the ways it wrinkles on the leg. I have ordered a medium weight grey cotton for it.
There are similarities to other SW costumes, the collar looks to be the same style as the Endor shirt, and there are no visible fastenings at the front. I think that the sleeves are full length, but folded up. The cuffs looks to be quite angled, just like the collar.
I have picked up this vintage sewing pattern very cheap.
At first sight the vest looks similar to the RFT vest, but I don't think so anymore. I can't see any pockets on the high res side photo. I also don't see a shoulder seam. What I do see though is two layers of fabric above the shoulder. My theory is that the front of the vest, which looks very smooth, is a second outer layer, possibly padded or made to look like a bulletproof vest. There is also a small stand up collar to the vest, that the jumpsuit collar is resting against. For the vest I have ordered a heavier twill in black.
Black belt with a large, oval belt buckle in silver that the belt passes through.
Only thing that you can see is that the boots are high and black. I'm going for a simple unadorned black boot with a very low heel.
My deadline for this is October 24, so that I have a week before Comic-Con.