Drake & Big Sean surprise birthday girl Kylie Jenner at party

Kylie Jenner was surprised by rappers Drake and Big Sean on Saturday (17Aug13) night when they performed at the reality TV star's 16th birthday bash.

The youngest of the Keeping Up with the Kardashians siblings celebrated her official sweet 16 a week ago (10Aug13) with an intimate dinner with family and friends, but Jenner pulled out all the stops for a second celebration on Saturday.

Held at the AT&T Center in Los Angeles, she hosted an Alice in Wonderland-themed party, complete with her extended family and famous friends, including rumored boyfriend Jaden Smith, actress Hailee Steinfeld, Tyga and Naya Rivera.

Drake was a big surprise when he hit the stage to perform his single All Me with Big Sean. During his impromptu appearance, Drake put his gold chains around the birthday girl's neck.

Jenner took to Twitter.com to coo about her surprise guests, writing, "DRAKE & BIG SEAN what?! Thank you guys so much. Thank u to everyone who came to my party and making my night so special HAD THE BESTTT NIGHTTT."

Her mother, Kris Jenner, also took to the microblogging site to show her gratitude to the hip-hop superstars, suggesting her daughter Kim Kardashian's boyfriend, Kanye West, was the mastermind behind the big surprise.

She wrote, "Wow wow what an amazing night @kyliejenner I hope you had the most wonderful birthday. Thank you Drake AKA @champagnepapi @bigsean for the surprise performances!! Love you Kanye."

West and Kylie's big sister Kim missed the party as they were attending the funeral of the rapper's grandfather in Oklahoma.