She was seated in prime position, at the center of the table.
But Kendall Jenner didn't seem too interested in chatting to the birthday girl, Justine Skye, instead preferring to snuggle with a male friend.
The model was pictured cosying up to the man as they whispered into one another's ears over the noise of the room.
At one point she even bent down to snuggle with her head in his lap as her friends ate.
While his identity was not clear, the man was not her NBA star boyfriend Ben Simmons, who was absent from the meal.
Nor was it the Hadid sisters Bella and Gigi's little brother Anwar, who Kendall was pictured kissing back in June. Friends of the two later dismissed reports they were dating, saying they were just friends.
On this occasion it appeared Anwar was sat opposite Kendall and the mystery guy for the meal at The Nice Guy in Los Angeles.
The party also included Jaden Smith, 20, who donned a bizarre artillery-inspired body belt for the occasion.
DJ sisters Simi and Haze Khadra, known as Semi Haze, were also in attendance.
For her night out with her pals, Kendall wore an oversized black leather jacket atop a black minidress.
The reality star added a boost to her statuesque figure with brown snakeskin ankle boots and accessorised the look with a embellished silver ring on her ring finger.
Styling her raven tresses in soft waves, Kendall finished off her stylish ensemble with a bronzed make-up look.
Jaden, who is the son of Hollywood legend Will Smith, proved his trend-setting prowess as he sported the quirky artillery-inspired body belt.
The aspiring actor teamed his eclectic look with a red undershirt and black skinny jeans, while wandering through the night in worn-in white sneakers.
Meanwhile, birthday girl Justine dressed for the party in a canary yellow co-ord which showcased plenty of cleavage and her enviably-toned abs, pairing it with a red Chanel rucksack.