Heaven.

That's super cool, I can't think of many metallic leathers or vinyls. So that leads me to believe this is a custom piece. But something like this is super easy to commission. Just talk with your local upholstery work room and they can help you work it out, just decide on the dimensions you want (standard seat height is around 17"-18"--just determine what's comfortable for you and the diameter you need.) You can sometimes find specialty fabrics like this from Lewis & Sharon and you can shop their online store from anywhere. They have a funky collection called Staceage and they have a cool silvery-glittery-vinyl-happiness-extravaganza that could be just what you are looking for! Good Luck!

http://www.staceage.com/catalog.php?cPath=1&current_category_id=1&csid=2&iid=&ct=

She actually has an entire line of super-slap-your-mama metallic leathers too, if glitter isn't your thing...

http://www.staceage.com/catalog.php?cPath=4