Chi-rish Shamrock Men/Unisex T-Shirt

I always read reviews with regard to product sizing. The reviews of the women's shirts indicated that even ordering a size up was too small so I opted for a men's medium shirt. I'm a petite, full-busted woman. The shirt I received was long with wide shoulders however very snug in the chest. I initially reached out to return it and was informed that the shirt dimensions are clearly stated but that I could indeed return it. Of course I did measure ahead of time which is why I chose the option I did. I decided to try washing and stretching the chest and hope that the rest of it might shrink a bit, being 100% cotton. It's coming along. The other comment is the size of the shamrock which covers my entire chest and wraps around. Not sure if the shamrock on the women's shirt is smaller but this is another consideration if you're thinking about these options.