Longchamp style White Button-Up Shirt

Longchamp style shirt. I bought this used and it doesn’t fit me correctly. Small spot on the front that might come out, but I don’t use bleach. Tag says size 34, but I believe this is much smaller. Please review measurements!! This is a Longchamp style white blouse in size 34 with long sleeves and a round neckline. The blouse is made of 100% cotton and features open cuffs. It has a casual style with a loose fit and an equestrian theme, making it a designer piece.