I had to rethink my fabric choice for the first dress too, changing the overdress from a silver-gray brocade to a dark purple one. The EID has quite a thick torso and she doesn't need the lighter coloured fabric making her torso look even chunkier. Dark colours recede, so the dark purple should make her look slimmer. I'll save the silver brocade skirt, which I had already cut out, for my Super Gem instead. She is considerably slimmer and therefore doesn't need to worry about fabric colour making her look bigger.
Once the first EID gown is done I'll try it on my new Hazy. I'm very curious to see how something for an EID fits a Super Gem. But first I need to take a trip to the fabric store and stock up on some thread. I don't have any colour that would work for the overdress hem as I'm totally out of black, dark blue and dark purple.