The Kardashians are showing off their killer curves!

Khloe took to Instagram Friday to share a sexy snapshot with her sisters Kourtney and Kim, writing, "FBF sisters."

In the pic, the three reality stars are flaunting their famous booties while modeling black one-piece swimsuits.

The youngest Kardashian sister seems very comfortable with her body! 

Her beau French Montana recently posted a racy photo of Khloe's backside, writing, "#asssscap." 


In the snapshot, the brunette beauty is flaunting her curvaceous booty in a pair of brown skintight hot pants as she lays on the bed. 

The "Keeping Up with the Kardashians" star recently celebrated her 30th birthday with Montana -- and her family -- in Las Vegas. 

Sporting a very short sparkly black mini with semi-sheer cutouts, the brunette beauty looked sexier than ever -- popping out that famous family booty on the red carpet. With her blonde locks in loose waves and a pale pink lip, this might be one of Khloe's hottest looks to date.

This was Khloe's third big celebration, who had a big family dinner on the eve of the actual birthday in NYC and a yacht party the following evening. Montana went all out for his girlfriend, presenting her with a $25,000 gold ring and a Jeep Wrangler Sahara. 

Not bad, right!?

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