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    Kylie Jenner Enjoys Birthday Dinner With Jaden Smith, Chris Brown, Justin Bieber and More—All the Details!

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    Kylie Jenner's official birthday may have been Sunday. But the Keeping Up With the Kardashians star couldn't help but begin the celebrations early.

    According to a source, Tyga hosted a 17th birthday party for the young fashionista out in Calabasas, Calif., on Saturday night. Sister Kendall Jenner, Chris Brown, Jaden Smith, Justin Bieber and other friends were among those in attendance.

    "Happy Birthday @KylieJenner," Bieber shared on Instagram after the party. "Glad I got to spend it with u. So dope watching u grow up."

    Turns out it was only the beginning of a jam-packed weekend.

    VIDEO: Check out Kylie Jenner's cool shaved 'do

    On Sunday, Kylie decided to switch up her hairstyle with a birthday buzz.

    "I shaved the back of my head for my birthday," she said at the 2014 Teen Choice Awards. "I was just doing my hair and I was like: ‘Why not shave the back of my head?'"

    And after winning Choice Reality Show for KUWTK, Kylie and her sisters took their new surfboards to Nobu in Malibu, Calif., for another birthday dinner. Bruce Jenner, Brody Jenner, Brandon Jenner, Hailey Baldwin and Smith were also in attendance. 

    PHOTOS: How the stars celebrate their big birthdays

    Kylie Jenner, Kim Kardashian, Kendall Jenner
    Kylie Jenner, Kim Kardashian, Kendall Jenner Phil McCarten/FOX

    "Kylie was so happy all weekend long," a source tells E! News. "It's beautiful to see her growing up and coming into her own. She is surrounded by so much love."

    By the looks of it, Kylie knows it! 

    "thank u everyone & T for the cake & JB for singing happy bday to me," she shared with family and friends. "I love u guys."

    —Reporting by Ken Baker

    Watch all new episodes of Keeping Up With the Kardashians Sunday nights at 9 p.m. only on E! 

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    PHOTOS: Kylie Jenner's best looks on and off the red carpet 



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