100% Silk. Real buttons! Detachable train. There is a small tear in the left armpit. I think this could be easily fixed and wouldn't be seen. When I ordered this dress from the store, it was listed as white. But it's not a bright white. So I took an upclose picture of the fabric next to a white sheet of paper. The last picture is of the original ad.
When I wore this at my wedding, I was more of a Size 2/4. Now I wear 4/6 and it is too tight for me.
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