The fabric is not chiffon, it's heavier polyester. Fits true to size around the chest, but the sleeves fit weird around the armpits. The bottom of the dress does not really flare out as in the picture, it's tight around the hips. I ordered my true size L so perhaps 2 sizes up would look loose around the hips but then the chest wouldn't fit right. Very disappointed that it does not look like the photo. Also, I'm only 5'3" and still it was too short.
I ordered 'dark blue' which was actually closer to a medium blue and it looked like a choir robe on me, maybe due to the weird place that the sleeves bell out. My item had absolutely no tags attached on the inside: no size tag, no washing instructions tag, no fiber content tag, and no brand tag, which disturbed me since it could have been a previously owned item sold as a 'new' item. I returned my item.