Yoga: It does the body good. It also doesn't leave much to the imagination. There's no telling who invented the yoga pant, but it surely was a result of the invention of spandex by chemists C. L. Sandquist and Joseph Shivers at DuPont's Benger laboratory in 1959. And those men - are heroes. It's near impossible to pick the hottest girls in yoga pants, but these 20 sure fit the mold.