Twenty-five years ago, costume designer Margot Wilson was a student living in Paris when she picked up a roll of red, moire silk fabric during a shopping trip to Milan. She didn’t know why, or what for; she wasn’t even a costume designer then, just a talented young fashion grad from East Sydney Tech on a six-month scholarship to France. When it was time to go home, she took the beautiful roll of fabric back down under with her. Fast forward three decades and a couple of dozen films later (including Lantana, Bran Nue Dae and Lawless), and Wilson has finally found a screen role for her magnificent weave –…