You could possibly take some of the excess from the waist area and reshape the sides so that you don't lose the print on the bottom. I just looked at the website at the dress. My suggestion is to undo the neck area from the slip. Cut off what you don't want at the top of the sheer dress at the shoulders. Re-shape your neckline, sew the shoulder seams and undo the side seams to redo the armholes. Re-attach the sheer dress to the slip. That is how I would do it.