I bought this in the white in both the sp and the mp. i am 5'2". i ended up keeping the mp (my usually size at 36c, broad shoulders). i found that the top of the sleeves to be a bit snug and i have normal size arms. if you look at the model shots, you can see that they are tight on top. i also found this shirt to be very long, even in the petite sizing. overall, i kept it as it was slimming, quality made, and the tight sleeve hopefully won't bother me (or shrink!)