I have had problems with 1x sometimes being too small so decided to go up to a 2x. Wow. The sweater fit like a 5x on me. It drooped down almost to my knees (I am 5'6") and the sleeves were over 8 inches too long. The colour was not the same either. I'm not even sure a size X would fit. I see some reviews saying "true to size" and "fits small", but that was not my experience. The knit is quite loose and that may have something to do with how it was so vastly over-sized on me.