Bought size XL. Fits true to size, as I wear size 33 or 16 in Reitmans bottoms. Comfy stretch cotton is breathable, perfect for lounging and sleeping. Not as high waisted as I expected, sits at mid belly. I am 5'0" with a short torso and a bit of a belly for reference. After sleeping in them, no riding up, which is a bonus. I would repurchase in more colours (I bought light purple).