The youngest Jenner celebrated her birthday with sister Kendall, Justin Bieber, Tyga, Chris Brown and The Game.
In a TMZ video, the celebrant is presented the erotic cake reminiscent of Miley Cyrus in Liam's birthday back in 2012. Soon after, she stood up on a table while her friends surrounding her shouting; at this point you can clearly hear rapper Tyga offering a shot of tequila to the teenager.
Kylie's rep tells media that the reality star was not drinking at the party, revealing that the glass she held 'was just water'.
Jenner also posted on her Instagram that Bieber sang "Happy Birthday" to her.
After Jenner's birthday party, the 17 year-old also posted a message thanking people who celebrated with her: "thank u to my friends for making this day so special so far. Happy birfday to me"
Sister Kendall shared a photo captioned "happy birthday to my teeny tiny baby sister@kyliejenner I love you!" However, this isn't the only message wishing her a happy birthday.
Justin Bieber posted a picture of Kylie on his Instagram: "Happy birthday @kyliejenner ;) glad I got to spend it with u. So dope watching u grow up".
It's no surprise that Bieber is flirting with Jenner as the two were seen in the past spending time together. Justin brought Jenner to a Floyd Mayweather fight in May.
The two were next spotted hanging out yet again at the renowned Rainbow Bar and Grill on Sunset Strip in West Hollywood. Kylie first tweeted a picture of herself and Justin all cozied up under the Sunset Strip Bar's romantic red light. It is reported that the two left the Rainbow Bar separately - Justin waving to a swarm of fans waiting outside while the teen reality star drove away in her SUV.
Whether or not the birthday girl and the "Boyfriend" singer are officially dating, it is evident that the two are keeping up with their "friendship".