OK so here's my first bra attempt. Its not perfect but its wearable. I think it needs a bit of tweaking.
I made it with quilting cotton, cotton batting and then plain white cotton for the lining.
I'm going to give it a test run and the try to wash it. If it makes it through the wash I might make some more but I am NOT ironing bras so if it looks awful then I'm not going to make any more. I may try a different pattern though.