Wow, can you believe Kylie Jenner is 16 years old now?!

The youngest "Keeping Up with the Kardashians" star celebrated her milestone birthday over the weekend with her closest friends and famous family members.

Bruce Jenner, Kris Jenner, Scott Disick, Kourtney Kardashian, Khloe Kardashian and Kendall Jenner all attended Kylie's birthday party ... but noticeably missing from the celebrations were sister Kim Kardashian, her baby daddy Kanye West and their two-month-old daughter, North West.

Kim did take to Twitter to share some well wishes with her younger sis, tweeting "Happy Birthday to my baby sis @kyliejenner!!!! Can't believe your 16! I love you so much!," to Kylie on her birthday.

The gang had one memorable birthday dinner at Nobu in Malibu, California -- and reportedly, Kylie's beau Jaden Smith attended the dinner as well.

Overall, it seemed like the brunette beauty had a great time. On Sunday, Kylie took to her Twitter to thank her family, friends and fans for the birthday love.

"Thank you to everyone for the bday wishes and making yesterday so special! Blessed!" she wrote. "Honestly had the most amazing night."

Click "Launch Gallery" above to see all the photos from Kylie's birthday party!

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