It’s very small at the top area (above the banding) I’m usually a 1-2X tops in FN tops and about 16-20 in jeans depending on how much they stretch. I normally get 18W jeans because my thighs are big asf! lol I got this dress to wear to my grandfathers funeral. He was a Police Officer and His favorite color was blue. There wasn’t a ton of sexy navy blue dresses to choose from unfortunately. If you have big arms get twice your size! Trust me it won’t be too big, not even the bottom flowing part. It fits super tight on the arm area. I got a 2X and it felt like it was a XL. Super uncomfortably tight across the arms and back. I’m plus size but tbh my back isn’t wide width it’s just my arms are auntie type lol. Overall it was ok for the occasion