The model's party was held at The Nice Guy bar in West Hollywood, California on Monday night, with her sisters were in attendance. Kim, Kourtney and Khloe Kardashian, as well as momager Kris Jenner, arrived in all-black outfits. Kris was joined by her boyfriend Corey Gamble, and Kim's husband, Kanye West, also showed up.
Kylie Jenner, 18, arrived to the party in an orange jumpsuit and what appeared to be a blunt bob wig. Her boyfriend, 25-year-old rapper Tyga, was attendance as well.
Kendall's famous pals joined her family on her birthday night, including two of her prior rumored love interests. Both Nick Jonas and Justin Bieber were spotted outside the bar as well as Gigi Hadid, Miguel, Willow and Jaden Smith.