Carey Mulligan and co. toast Catherine Martin and Miuccia Prada's Gatsby costumes


Carey Mulligan, Catherine Martin, and Katy Perry   
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"When the clothes arrived, it was like Atomic Christmas!" said costume designer Catherine Martin at the unveiling of the party frocks Miuccia Prada created for Baz Luhrmann's The Great Gatsby (out May 10). Yesterday evening, guests such as Maggie Gyllenhaal, Florence Welch, and Alexa Chung descended upon Prada's sprawling Soho flagship to sip Gin Rickeys (Fitzgerald's libation of choice) and take in the glittering Jazz Age wares—many of which were reinterpretations of archived Prada looks. "Baz and Miuccia have been friends for twenty years," Martin recalled. "Baz wanted costumes that felt visceral and fresh, and using something contemporary and familiar that has a sense of glamour and grandeur helps the audience to understand the milieu that Gatsby flew in and the level of luxury and beauty of the period. It was a very exciting process."

Mrs. Prada turned up late in the evening and rushed over to greet cast members Tobey Maguire, Isla Fisher, and Carey Mulligan—who brought her mother as her date. "I felt very wealthy. It was so heavy and just felt so decadent and elegant," said Mulligan (who stars as Daisy) of the Prada chandelier dress she wears in the film. Fisher, who plays Myrtle, noted that her on-screen wardrobe wasn't quite so luxurious. "I think my character makes her own clothes," she said.

Katy Perry told that a sequined midnight, rose, and silver striped look was her top pick. "I'm more of a forties girl, but I appreciate the ornateness and attention to detail in twenties clothes," she said, adding, "I've never read [The Great Gatsby] but I'll probably love the main character—what's her name?—Daisy."

Draped in a dramatic (and period-appropriate) feathered cape, architect Zaha Hadid swooped in at the tail end of the fete. When asked what type of costume she'd construct for Daisy, Hadid gazed over at the exhibition. "I couldn't do better than this."

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