Margot Robbie looks gorgeous in a golden Chanel dress at the 2026 Met Gala held at the Metropolitan Museum of Art on Monday (May 4) in New York City. The 35-year-old actress stepped out in a long draped gown adorned in ruffles and flowers. What is Margot Robbie wearing at the Met Gala? Margot is a Chanel ambassador and was fittingly wearing Chanel, specifically a long draped golden lamé dress adorned in the back with cascading ruffles in a gradient of flower petals and a golden flower embellished with feathers. It took 761 hours to add 1,080 embroidered elements in the making of the dress.