Though i am a true size medium, i do not like fitted tees, so generally i buy a large. based upon other reviews, i decided to give the medium a try, hoping that it would be loose enough. though i am on the cusp of petite (5' 3 1/2"), i decided to go with the regular medium since i prefer longer, tunic length tops. the medium does run big, imo, and fits me like a large would. it is loose, flowy and long enough to cover my entire backside. the sleeves are long and i do have to roll them up, perhap