Silk can be made in a variety of ways. And I LOVE the texture! If it was really smooth, it would hold the shape that it does without extra stuff.
The purple one ( which i bought) is identical. I'm sorry that you're returning it!
I'm not returning because of the texture, although, it did surprise me. But once I put on the dress, I realised the dress wouldn't keep its shape if the fabric didn't have the rough texture. I am returning though, because it's too expensive for me when the fit isn't perfect and because I know I won't wear it often enough. I've ordered the tees - I just love the intricate details and I think I will get more wear out of them.