Kylie Jenner kicked off her birthday celebrations with an intimate, 'princess kitty'-themed party at her Beverly Hills mansion on Friday evening, ahead of her 29th birthday on Monday.

Her sisters, Khloe and Kim Kardashian, joined close friend Hailey Bieber and other celebrity guests for the festivities. Jenner shared glimpses of the event on her Instagram Story, showcasing elaborate decorations, custom cakes, and her striking outfit.

For the celebration, Jenner donned a hot pink latex minidress, complemented by pink sandal heels adorned with feathers and fringe. Her manicure matched the vibrant theme. She also displayed a collection of Hermes Birkin bags in a closet selfie, highlighting her party look.

Hailey Bieber, also in attendance, shared posts of herself mixing drinks for guests. Bieber's ensemble included tan, tight-fitting pants, a pink feather boa, and a rhinestone tiara. She later posted a photo of a bejeweled crown she received as a party favor.

Kim Kardashian arrived with her daughter Chicago, who is the same age as Jenner's daughter Stormi. Kim was seen in a white knit sweater, while Khloe opted for a baby pink slip dress. Khloe's ex and the father of her children, Tristan Thompson, was also reportedly seen arriving at the property.

Kylie's older sisters in attendance also shared a look into the decoration for the youngest KarJenner sibling's birthday celebration

The party's decor featured a plethora of pink elements, including balloons covering a ceiling and a tray with sequins, tiaras, and feather boas for guests to wear. Cakes included one with gemstones and another shaped like Jenner's figure, with the word 'meow' inscribed.

A cake covered in white frosting and adorned with colorful gemstones

Jenner's beau, Timothée Chalamet, was not pictured arriving at the party. The couple was last publicly seen together at the World Cup finale approximately one month prior to the event.