Actually designed for the Tank Girl Bra as I make props.
However its a pretty cool shape and even a lampshade or whatever. So I thought i'd upload it for others to enjoy.

I've split into two sections which still need to be scaled to .8 to fit on my 20x20x20 printer. Each half takes around 6 hours to print to.

Print both sections, then i glued them together followed by welding with a flat head soldering iron. Finishing is whatever you chose.