A few times a year I pick up some solid color t-shirts from Target. I wear a size medium. The styles change slightly each time but the fit is always the same. I was recently at a Walmart and noticed that they had their solid t-shirts on sale and they had a color I liked that I didn’t currently have. I was disappointed when a few days later I put that shirt on to find that Walmart’s “medium” shirt was twice the width of my body and almost down to my knees.