I'm normally a size med 6-8 regular clothes so fashionnovas med 7-9 usually fits me super well or has a bit of room to get taken in. This dress fits like an XS!! Couldnt get it up past my butt (I don't have a big Kardashian butt) & no chance of zipping it up as there was still at least a couple inches of skin to cover around my bust/torso/hips before sides of dress could be pulled together. The fabric has absolutely no stretch to it. Super cute design but i'd probably need an XL which is crazy for someone who is 5'1, 145lbs, regular curves.