Create DIY for this, I guessing you are going to need to use 2 shirts, cut the one you'll wear with the side slits. Then cut strips out of Tshirt, sew into the inside of the first shirt at the top then weave and sew to the bottom of shirt.
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.