Tonal Stripe Button-Up Shirt

I usually wear a size L and ordered this in M and L. The M fit me ever so slightly on the fitted side, where the L is a loose fit that hits me at the hips. Either size would work for me (I prefer roomier, so probably would go with my regular size) except this shirt is very sheer. Definitely plan to wear a camisole underneath if you don't want your bra to show through. Unfortunately this is a return for me. Also, if you're petite like me, be warned that the sleeves are nearly down to my elbows, longer than on the model in the pictures.