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Kim Kardashian posts sizzling Flashback Friday snap with sister Kourtney as they strip down to cut-out swimsuits...

  kim kardashian might have one of the largest bikini and swimsuit collections possible, but we'll never forget her cut-out number from back in 2007.
And it's a memorable one for her too.
The realty star posted a Flashback Friday snap today of her and her sister Kourtney filming together, showing off their incredible beach bodies.
While Kim barely covers her boobs in a tiny bikini style top, attached to equally tiny bottoms, Kourtney was her twin in a lacy red number.

It looks more like lingerie than swim gear.She wrote: #FBF Kourtney & Kim Taking Miami in 2007."
Both of the brunettes are wearing huge sunglasses and Kim has even added a small scarf around her waist, as the pose with the exact same pout for the camera.
It comes as she stripped off this week for a new beach shoot, and now she's a blonde, it just means she HAS to have more fun.
This particular shoot, shot on a Malibu beach by famous snapper Elle von Unwerth, required the reality star to pose up a storm on jutting rocks in just a lace black bra.