Found at ReadyMade blog
Custom dress forms be damned. Why spend an arm and a leg on one of the limbless de Milos when, in less than two hours, you can make one from duct tape for about $15 (instead of the $300—or more—a custom form would cost you)? The folks behind Threads magazine have put together a great primer on how to make a duct tape double.
Perhaps because of its irresistible body armor allure, the duct tape doppelgänger is also oddly popular among Lord of the Rings costume makers, and historical reenactors. The process requires a partner (who will mummify your t-shirted torso with tape), so invite your stitch-savvy friends over for drinks and a duct-tape dummy-making party à la The Bookish Girl. Spilling wine on your shirt isn’t a problem when you’re wrapped in duct tape!