I followed the excellent instructions here from the Southern Institute of the Domestic Arts. The changes I made are noted below. When the usefulness of this nursing cover is over, it can serve as an apron.
1 Men’s XL shirt
15″ of boning
I cut the back off the men’s shirt including the yoke to use as the cover, cutting along the side seams and arm hole seams. This shirt had French seams, so I didn’t finish the edges and took advantage of the shirt hem. The side seams will fray a bit on washing and need to be trimmed, but I don’t mind and I don’t think the recipient will either. I used the front button band as the strap.
For the top of the nursing cover, I used the double layered yoke to encase the boning and the straps. I folded under the raw edges and stitched the top of the cover. Using a shirt with French seams, makes this project super fast.