I measured beforehand, and ordered a xxl. The seller-provided chart indicated that a xxl equaled a US 14, but it really fits more like a US 16. It was ok through the shoulders (simply because I have broad shoulders to begin with), but was like a tent everywhere else! Since 1940s styles are rather fitted, I ordered an xl (said to fit like a US 12). This sizing IS more accurate, and while it's wee bit snug for me through the shoulders, it fits like a dream everywhere else. I'm keeping the smaller size, although a truer US 14 might have worked better. I'm 5'7" and both sizes hit below the knee. The colors are vivid and the print is beautiful. Many dresses were made of rayon in the '40s so this dress will work well for my writers' conferences.