Bought the 1x and it fits beautifully, though I usually wear a large.  My bust is 41 1/2".  Very nice and airy and lovely color for my skin color and teal eyes.  Just know that to wear as a top and not a cover up, I had to sew the opening closed.  It is not meant to be top on it's own as the spaces between buttons are open.  I hand stitched it closed from the inside and voila, a perfect top for my leggings!  For the price, it was worth the effort.