• SIENNA MILLER'S GOWN photo | Sienna Miller

Credit: Alberto E. Rodriguez/Wireimage

Published: Friday April 18, 2014 06:00 AM EDT



"I'm fully prepared for your answer to be: It's custom. But where can I buy the dress Sienna wore to the Oscars afterparty?" – Josephine
We bet you weren't fully prepared for this: The Alexander McQueen design is sold online and still available in a few sizes. Bet you weren't ready for this either: It'll cost you $3,098.16.

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