At one point during the reality star's party, pink and gold confetti ... Kylie Jenner is 21! The youngest of the KarJenner clan celebrated her milestone birthday at Delilah, a restaurant-lounge ...

Sami posted a photo of her pink frosted birthday cake with 21 metallic pink birthday candles ... where she posted a black-and ...

For the dinner, Sophie wore a white, gold and pink sequined dress and completed the festive look with a rhinestone crown that read, "Finally 21". "Here's the birthday girl. Wow, look at you.