It's the battle of the Brits: Sienna Miller and Cara Delevingne both hit the Costume Institute Gala red carpet wearing similar studded looks from Burberry. Sienna decided to contrast her fluid crepe white gown with a black studded leather biker jacket and a matching spiked headband, while Cara opted for a black studded plunge-neck column gown, complete with an equally tough white leather clutch. Both beauties channeled punk-cool to perfection, but which Met Gala look do you prefer?
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