I love this dress. I was skeptical because depending on the material some things don’t stretch and I have big boobs 44g. I thought this was going to be an item. I was going to have to return, but the stretch on this is amazing. The zipper is a heavy durable zipper. The only issue I have because of my boob size is, I can’t show cleavage or the zipper will start to unzip, so I have to wear it zipped up, but it is formfitting and flattering and very comfortable. I love this dress.