Vintage ladies purple floral Blouse Top Size XL extra large

I have one of my mom's vintage blouses. She has had this for years. It has just been stored away, and she has not worn it in years. She gave to me to sell. Unfortunately it no longer has the tags in it. I believe this is from the late 70s or early 80s. It looks to be single stitch. With it not having tags I used the U.S. Apparel size chart to figure out the size, and measured this where it showed me too. The bust measurement I got was 20 inches so it will fit about a 40 inch bust. The waist I got 18 inches so it would fit a 36 inch waist. The bottom hips measurement i got 21 for approximately a 42 inch hips. From the measurements I got the chart said this was a XL. The sleeves are 9 1/2 inches long when measuring from the top out. The blouse is in excellent condition with no stains or issues noticed. I have given several pictures of it so please check those out. If you have any questions please ask.