Khloé Kardashian and James Harden began dating this summer

By Michele Corriston
Updated September 28, 2015 01:40 PM
Credit: Courtesy James Harden

It looks like James Harden has the the Kardashian/Jenners sisters’ stamp of approval.

On Monday, Khloé Kardashian‘s basketball player beau posted an Instagram of the couple posing for pictures with Kendall and Kylie Jenner at his lavish 26th birthday bash.

“Real sisters,” he captioned the picture, adding star emoji.

The reality stars and about 200 guests partied with Harden aboard a yacht in Marina del Rey, California, in August, sipping champagne, hitting the dance floor and taking in a fireworks display from the water. (Kanye West and mother-in-law Kris Jenner even managed to squeeze in a nap.)

Kardashian, 31, and the Houston Rockets shooting guard began dating this summer. She was previously linked to rapper French Montana and is finalizing her divorce from NBA vet Lamar Odom.