French Montana is proud of his girlfriend's assets!

The rapper took to Instagram Thursday to share a sexy snapshot of Khloe Kardashian's backside, writing, "#asssscap." 

In the pic, the reality starlet is flaunting her curvaceous booty in a pair of brown skintight hot pants as she lays on the bed. 

The couple has spent the past few days together in New York, on the set of Montana’s new music video for "Don't Panic." And Montana's latest picture proves that they're closer than ever! 

The "Keeping Up with the Kardashians" star recently celebrated her 30th birthday with her beau -- 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.

Thankfully, it seems like this relationship is going a little better than her last one. In a just-released clips from this Sunday's "Keeping Up with the Karadshians," Khloe admits she knew Lamar Odom cheated on her -- on her birthday!

In another clip, Khloe vents her frustrations to her mother Kris Jenner, who she accuses of taking Lamar's side. 

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