Credit: Mike Coppola/Getty (3)

At first glance, the see-through dress Jessica Chastain wore to this Sunday’s Tony Awards looked like she needed to be extra careful in case of accidental overexposure. Turns out, it was just the opposite. “It is so fitted to me, there is no room for any kind of malfunction,” the actress told of her Marios Schwab design, spinning to show off every embroidered Swarovski crystal, the attached light peridot-hued necklace, and built-in corset. “And that gives me a lot of confidence. I could do aerobics in this thing, and I’m fine. That to me is a happy place that I think you need to be when you go on a red carpet.” For accessories, she chose Harry Winston yellow diamond earrings and silver Giuseppe Zanotti 5.5-inch platform peep-toe pumps. “I’m not the tallest person, so let’s hike me up—I love tall shoes,” she said. "I could really do aerobics right now." Next time, we'll challenge her to some jumping jacks!

Plus, see more Tony Awards moments.