I measured before I purchased. Based off of the sizing chart, I went with the 2X which was spot on with waist measurement but should have been a little snug on the hips. I could not even get them buttoned they were so tight. Went up to the 3x and they fit great! I wish they were a tad more high waisted though. I have more in the back than most other my size do, so someone else with a smaller backside might not have the issue I do. If I don't hike them up before I throw a leg over, I'm mooning people. They are the best fitting and feeling riding jeans I've tried so far! I do wish they were a little slimmer on the leg, but that's just style preference. My main concern is fit and feel, and they both fit and feel great!