I got a 1x and I’m usually an x large in other shirts but this shirt was too small. It’s cute but runs small

bought this as a gift for a client and I know she’s an XL so that’s what I purchased. it arrived and as soon as I pulled it out I could tell it ran small. I tried it on and it fit me and I’m a medium/large. it fit me nicely not tight but not too loose. I’m 5’7 and 164lbs with long arms. going to reorder 2 sizes up for her hopefully it fits. other than that super cute and good material