I really liked these dress on the picture, but I am size S and they only had M or larger. I decided to risk it and to order a M-size, unfortunately is too big. I thought it might fit as it is a 'wide' model, but it's just too big. So I'd recommend to order the dress in your own size ;)
The colors of the dress really are like on the picture, the fabric is soft, but you feel it's "cheap".
I received the dress within a month, as expected. I contacted Sheinside on FB to modify my order, and they arranged it the same day.