Do repurpose your 'old' clothes? I had a batwing top that was sitting in my cupboard. I loved the fabric, pattern and the shape of the top but somehow the batwing thing just didn't work - too much material in the wing things and probably a 'young' design/look for a not so young mama so this morning it got a renewed lease of life.
Step 1. Take the good old batwing top and check stitching.
Step 2: Take fabric scissors and cut carefully along the outside of the seam.
Step 3: Repeat on other side.