Spandex, and lycra are trade names for Elastane fibers. This eight page paper, (link below) gives some background of Elastane, and discusses the testing of elastic fabrics in section five. When Elastane was invented in 1937 in Germany I don't think the inventors had any idea of its marvelous use in cosplay, and that cosplay would test the breaking point to its ultimate limit. So, technically, looking at cosplay photos can be correctly defined as material testing research. See, science!https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=10&cad=rja&uact=8&ved=0ahUKEwjcg6fozOnQAhVGwiYKHZ8zASUQFgg5MAk&url=http%3A%2F%2Fnopr.niscair.res.in%2Fbitstream%2F123456789%2F12655%2F1%2FIJFTR%252036(3)%2520300-307.pdf&usg=AFQjCNGOMvBR1QMAgXHFbxVWbxf0Ur95LA&sig2=m1njYBWcXMSXYT-BUSTf4g&bvm=bv.141320020,d.eWE
Thought you'd been hacked by a spambot for a moment there.
LOL, I wonder how much silicon is in those 'gran tetons'... :-)
Sometimes less than you think via a combination of multiple bras safety pins and makeup.