Short sleeve pocket dress

Split neck pocket dress with short sleeves. Back zipper closure. Dress was ordered straight from China so the sizing is off. I ordered a 3x and it appears to be a 1x. The dress measures 37" long, 20" wide from hip to hip. The chest area measures at 20 1/2" wide. It has about 2" of stretch to it hip to hip. Unfortunately, there are no inside tags with a description of the material. The last four pictures were taken from the internet to give a look, size, description of the dress.