Joan and David Trench Coat Size Medium, fits like a small

Joan and David beige trench coat. Size medium, but fits like a small in my opinion. Approximate measurements below (in inches): Shoulder to shoulder seam: 14 Pit to pit: 19.75 Sleeve from shoulder to end of sleeve: 23 Length (from middle of collar to hem): 37.5 Colour is a dark cream, more beige than tan Fabric is 80% polyester, 20% cotton. Has a nice sheen to the materials. There are pearl buttons that add a touch of femininity to a classic look. I’m reposhing those item as it’s unfortunately a bit too small for me. My home is pet free, smoke free. Feel free to answer any questions.