I got this for Ren Faire and it worked great! I ordered a 2X/3X based off of reviews but I think I would have been fine with a L/XL. I typically wear a size 16. The dress does adjust with the lacing at the shoulders, back, and front, and I made it as tight as it would go. It did fit well but if I had gone down a size it would have been even better, but I was still very happy with the dress! I am 5' 6" so it was a bit too long so I had to use skirt hoists from the Ren Faire to pick it up on the sides so it didn't drag, otherwise it was about 3-4" too long for me. The material is definitely a synthetic but it is very soft and was extremely comfortable. I would definitely recommend this dress! I ordered the teal and it was much brighter/more vivid in person. It looks more muted in the pic so if you don't want a bright color go with the grey/blue color. Otherwise the color was lovely. I ordered it on Prime 1 day shipping and it arrived on time. Looking forward to wearing it again, and might even order another color in the future, but I might go with their other style with the "cap sleeves" as the long flowy sleeved did get in my way a bit, but I have short arms. I might just tack up the sleeves at the elbow to keep the effect but keep my hands free for mead :)