Leia's The Last Jedi Command dress.

The underdress is made of a dual layer of
double silk georgette and a blended
charmeuse. The outer jacket is a black
weave that give a bit of a metallic sheen
in
the light and is lined with a black kona
cotton.
Included are also the gold wrist bracelet,
earrings, and both her TFA gold/blue ring
and a new gold with blue gem ring seen
in
the promo photos and behind the scenes
photo.

The back of the jacket features a collar
seam and small pleat which was visible
only
after I brightened the back shot of Leia
from the first TLJ promo.

All reference photos can be found here:

https://www.flickr.com/photos/mianaken
obi
/albums/72157665711211309