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We took care of tracking down links to buy Shakira's sexy cami, Taylor Swift's necklace and more pieces worn by stars. All you have to do now is take out your credit card

SIENNA MILLER'S GOWN

"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.