Blac Chyna Celebrates King's 4th Birthday With Epic Lego and Ferrari-Themed Party -- See the Pics!

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Happy birthday, King Cairo!
Blac Chyna's son with ex Tyga turns four years old on Sunday, but celebrated the day before with an epic Lego and Ferrari-themed party!
Chyna couldn't help but show off Saturday's festivities on Snapchat.
"Getting ready for King's Lego Ferrari Party. He's turning four tomorrow, so you know I had to do it big," she said, panning the camera over a sea of red Ferraris in the driveway.
Photo: Snapchat
Next, the Rob & Chyna star gave fans a tour of King's Ferrari-themed bedroom. "King's Ferrari room is just finished," she announced while showing off a new bike, bed, and bags of presents. "I'm so excited!"
Photo: Snapchat
Chyna then forayed into the backyard to join the party, which included candy and lego stations, a jumper slide, a taco grill, a lemonade stand and an adorable Ferrari-themed cake.
Photo: Snapchat
Photo: Snapchat
Photo: Snapchat
Photo: Snapchat
King clearly couldn't get enough of the day, parading around the party in a mini Ferrari and matching outfit.
Photo: Snapchat
And, of course, a party is not a party without a member of the Kardashian-Jenner family -- Kris Jenner posed along with Chyna and Chyna's mom.
Photo: Snapchat
In just four weeks, King Cairo will be a big brother to a new baby sister. 
See the latest on Chyna's pregnancy in the video below.