Didn’t receive my item and contacted fashion nova customer service all they said was they were not held responsible and to file a claim with usps

I wore the dress to a semi formal dance and halfway through one of the straps come completely out of the stitching! I had to safety pin it and it doesn’t look like I’ll be able to wear the dress again. Other than that it fit really nicely and I seemed like a good hilarity fabric, it wasn’t see through and it had a nice smoothing affect of some of my “lumpier” parts