Designer Original VINTAGE slightly off white sweater. It says XL but it’s M-L EC

I bought this great sweater with the intention of wearing it myself. It says XL and so without trying it on I bought it. Silly me. Vintage is smaller than today’s sizing. The measurements are P to P 21 inches, sleeve from shoulder 25.5 inches and length is 20 inches. It’s a little too small for me. I usually take M to L in sweaters but this one is just too snug. I hope someone will enjoy this beautiful classic. Back zipper is 8.5 inches. mock collar. It’s lovely.