Polyester reached a peak of popularity in 1977 when John Travolta wore a three piece white polyester suit as he danced across the floor in Saturday Night Fever. The synthetic fabric was all the rage then, but it fell on hard times, a victim to the allure of natural fibers.  Now polyester is making a comeback thanks to its embrace by many of the Parisian designers who tout it as the next best thing.  Louis Vuitton, Balenciaga, Calvin Klein and Armani to name a few.  One thing that has changed though is, it’s not cheap anymore, the cost is rising as fast as gas because it’s made from fossil fuels.