Just over a week ahead of the 18 year old's August 10 birthday, the youngest Jenner kicked off the celebrations with an intimate gathering of family and loved ones by her side, sans the reality starlet's dad, brother and soon-to-be sister-in-law.
Donning a sheer, black lace jumpsuit, the near 19-year-old Keeping Up With the Kardashians star arrived to Los Angeles restaurant The Nice Guy around 10 p.m. with beau Tyga, where two cakes awaited the birthday princess.
Sisters Kim Kardashian West, Kourtney and Khloe Kardashian, who donned purple corn rows, each made an appearance, alongside Kendall Jenner and A$AP Rocky, who partied together but weren't spotted showing any PDA a source tells WHO.
Family matriarch Kris Jenner also attended the party with boyfriend Corey Gamble, and Scott Disick and Chris Brown also made an appearance for Kylie's birthday.
The clan, who celebrated until 2 a.m. and could be seen dancing to the beat of the music, snapped selfies and posed for pictures in the photo booth to commemorate the evening.