Kylie Jenner vs Blac Chyna -- Competing 4th Birthday Parties for King (VIDEO + PHOTOS)

Kylie Jenner is in the running for StepAlmostMom of the Year after she and Tyga threw a baller Ferrari birthday bash for his son -- but it happened to be a carbon copy of the one Blac Chyna threw.

King really made out for his 4th birthday -- the Sunday party with Kylie and his dad was epic. Ferrari balloons, Ferrari cake, Ferrari plates, horse rides with Ferrari saddles, and a freakin' Ferris wheel!

But King got all the same stuff one day earlier at his mom's house. Seriously, Chyna had almost the exact same Ferrari themed party on Saturday.

Kylie and Chyna really should talk more often.