Natalie Portman has sung the praises of the Mulleavy sisters' work for Black Swan, and it seems the design duo were equally in awe of her acting: "I think Natalie's performance is one of film's greatest, she completely transforms. The costumes are part of the character and we were able to work together, so it was an amazing experience for us" says Kate Mulleavy.

"We weren't just creating fashion within a film, they had to be seamless parts of it," Laura adds.

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As well as ensuring the tutus and tiaras for the final performance of Swan Lake were spot on, production designer, Therese DePrez, was on hand to choose set pieces as beautiful as the ballet itself: "We used Swarovski crystal chandeliers. What was amazing about them was the elevated look they gave the set, they had a movement like ballet, giving kicks and glints." Check out the video below to hear more about the stunning Swan Lake set pieces