I bought an X, which is normally my size and they fit very loose, which I like. I'm 5'2 " and it goes to the top of my foot. I washed it and put it in the dryer and it did shrink lengthwise about 2". I'll get them shortened as I'm concerned I might trip in the stairs. I do love the T-shirt look, and the material is very soft with some stretch. It's a thin material but not see through. Very comfortable to wear around the house and for sleeping.