I am 5'9", weigh 210, wear a 38DDD bra, and generally wear a size 16. I purchased an XL, which was a little tight on me. I probably should have gone with the 1X, but I am in a weight loss phase so anticipate it will fit better when I lose another 10-15 lbs. The dress is made of a thick fabric, which seems higher quality. The zipper is cheap. There are two seams it has to pass over to zip up and it got stuck, like really stuck, and almost broke (even when I wasn't wearing the dress I had this problem with the zipper). I anticipate I'll have to replace the zipper if I want to wear it. In person, while the dress does a a silver sheen, it looks more white with silver than silver like the picture shows. Do not purchase to wear to a wedding because you'll look like you are wearing a white dress and that's just not cool unless you are the bride.

I wear a FN size large and purchased this in a large. It fits perfectly. Be ready to take small steps because there is no split in the back, therefore, you will be walking even more sexier with a sway in your hips.