Women's "Oh For Peeps Sake" tee

I purchased this tee from an online boutique. It's a wee bit too small for me and I cannot return it. The dark shading on the left sleeve is just a shadow. the shirt is brand new and in perfect condition. Materials: 100% Polyester Size: Medium Lay Flat Measurements pit to pit- 17.5" pit to hem- 16.25" WSS-066