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Kourtney Kardashian, Kim Kardashian

SDFL / Prahl Splash News

If there was an official Kardashian uniform of summer, wouldn't this be it? Our cups runneth over!

Hot mama Kourtney Kardashian and hotter auntie Kim Kardashian bring out the big guns in a bikini duel for the ages as they prepare for a swimwear fashion show in South Beach. Let us know who you think wins this battle of the bods in the comments section.

Two-piece out!

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Comely Kim proves she's got the goods and she's happy to display them in a variety of bikini's. It's your move Kourtney!