This is a costume that Scarlett Johansson wore in The Prestige.
It was one of many costumes on display at the exhibit but I have to say it was my favorite because of the details! The cream lace that overlays the blue fabric also has flowers appliqued onto it, which seems like a crazy amount of work but I love it. Even the combination of fabrics and trims all together I find amazing!
What I would give to see the inside of these costumes!