I am 240lbs and 59 inches tall. I typically wear a size 16 pants and I ordered an XXL. It fits pretty perfect! I love how this dress accentuates my curves, I am very picky about dresses so for me to even like it, it has to be great and comfortable. I have a very large chest (42DDD) so the boob room is ~almost~ too small for me, but do-able. Im wearing it as a bridesmaids dress this summer. I highly recommend this dress!