Reviews say order two sizes up and that seems true BUT is 4x max size and chest no less than 2 inches . from the zipper and belly 5 inches from the zipper. Luckily I have a tailor who can change the back so I can wear it to an event next month. The buttons on the cuffs need a significant shift as they are designed to fit a wrist with a radius of a two-liter soda bottle. I'm a little tired that Revain's dress sizes aren't true.