I just received these jeans and I ordered a size 16 as I normally wear a size 14. The style is wonderful and the material is so soft and the color is not too light. I tried them on and they do not button. I am not returning them as they fit well everywhere except the waist and I feel size 18 would fit loose. This is a bit of an incentive to lose a couple of pounds. I would suggest you size up for sure but all in all superior quality and an excellent price.