Kim Kardashian & Naya Rivera Both Ooze Sex Appeal In Low-Cut Dresses -- But Who Wore It Better???

Left: Kim Kardashian wore a boob-baring Givenchy gown to the Mademoiselle C premiere in Paris last year.
Right: Naya Rivera showed off her possibly enhanced cleavage in an Instagram selfie on Saturday.
Both ladies wore décolletage-displaying black dresses with similar blonde tresses, but we wanna know…
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[Image via BauerGriffinOnline/Instagram.]