I've been working on something different with men's shirts. So far this is what I've come up with. It's intended to be worn as a layering piece over a bra top, bandeau, or swimwear at the beach.
Really simple to do, I used a wrap top dress pattern to cut and size the back. Then removed the collar and arms, cropped to the required length, and added a hem around all. With the leftover fabric, I made bias binding which was then sewn together to make a very long tie. A channel was added for the tie front and back and threaded through.
The tie can be worn front, side, and back. I'm calling her Anna and I will be adding a few more of these to the shop. This one is now for sale if you follow links 8-12.
Have a go!