This Can't Be Comfortable
"I wanted to test it straight away so I cut up lots of pieces of clothing to create a prototype. I worked well into the night, but realized pretty quickly that even my own crude attempt was a comfortable and supportive backless, strapless bra."
The bra will set you back $50 and unfortunately it's only available in the UK and Australia. You big tittied American women are out of luck. Actually, just make one using duct tape and Elmer's glue. It will probably be more comfortable.
Again I don't have large breasts, so maybe this Joanne character is on to something! You tell me.