Irina Vs. Beyonce: Who Wore It Better???

Left: Supermodel Irina Shayk at the Cannes premiere of All Is Lost last month. Right: Beyonce at the 40/40 Club‘s 10 Year Anniversary arty on Monday night.
Both beauties are wearing the same Roberto Cavalli gown, but we wanna know…
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[Image via Retna & Getty Images.]