A while back, I made the first version of this dress, made another that was…not good, but I lined the bodice instead of using bias tape, and that part was an improvement. This time I did the same, but could not figure out the top without just pressing the seam allowance in and top stitching. 
Tedious and horrible, but it turned out nicely.
I cut out some cardstock for the heart and ironed the fabric around it until it kept its shape. I added interfacing to the back, and then attached it to the skirt. The bow is just a strip of the checkered fabric. Thanks for looking!