Why Were Miuccia Prada, Katy Perry and Alexa Chung All Hanging Out Last Night?

Despite the nine-day wait until Baz Lurhmann's The Great Gatsby hits theaters, the film's costumes—designed by the director's wife, Catherine Martin, in collaboration with Miuccia Prada—are already on display for the "Dress Gatsby" exhibit at NYC's Prada flagship in SoHo. The show opened last night with a massive cocktail party at the store, attended by most of the movie's cast and several other stylish stars, including Alexa Chung and Florence Welch.

Seeing as the event was all about Gatsby glamour and '20s-era decadence, every single attendee brought their fashion A-game. See and shop our favorite looks in the slideshow below.

Dressed in Fall 2008 Prada, actress Carey Mulligan (aka Daisy Buchanan) chats with singer Florence Welch. Click through to shop both looks now.

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