It's the battle of the booty!

Kim Kardashian and sister Khloe both put their famous physiques on display in NYC on Monday, stepping out in a pair of curve-hugging dresses that really flaunted their figures.

With her hair done up big in loose waves, Kim was rocking her "old school glam" look -- and showed off a hint of her tight tummy in another one of her beloved crop-top dresses. She paired the look with gold heels and her "Nori" necklace.

Khloe, on the other hand, wore her hair straight and sported a crop-top mini as well. She paired the crazy print with black heels and a bright blue Hermes Birkin bag.

And despite looking thinner than ever, Khloe was asked by PEOPLE about pregnancy rumors. "I feel like I've been pregnant for six years," she told the mag. "I mean, one day the rumor will be true, I hope, but who knows? Until then, it is what it is."

Meanwhile, Kourtney Kardashian -- who is pregnant -- looked cute in her unique brand of maternity wear, stepping out in heels, white short shorts and a flowy top/blazer combination.

Whose style do you think is best? Sound off below!

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