POLL: Who Wore It Better - Kourtney Kardashian Or Irina Shayk?

Left: Kourtney Kardashian celebrated Scott Disick‘s birthday in Vegas wearing this green leopard-print Versace dress over the Memorial Day weekend.
Right: Irina Shayk stepped out in the exact same number on Tuesday night for Sirin Labs‘ SOLARIN launch in London!
While both bangin’ brunettes showed off their sexy stems in the mini dress, we have to ask…