I want this so bad! You can either wear an under shirt of any color, or sew a color under the ripped heart. The shirt also has a slouched shoulder, so i prefer a tank top instead of sewing under the heart.
Summer bow top shirt: Use a raserback tank and grab some fabric from your local fabric store. After you tie the bow, attache it to the shirt with a hot glue gun. If it comes off in the drier after a few washes, apply a little more.