Tomorrow is Tyga’s birthday — but Kylie Jenner went ahead and started celebrating yesterday thanks to Tyga’s son, King Cairo.

Kylie shared snaps of the duo planning for the rapper’s 27th birthday — which included multiple cakes, balloons and super awesome moments between King and his step-mom babysitter dad’s girlfriend.

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Eventually, the party continued on a private plane — where Ky had some NSFW cupcakes waiting for her man.

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LOL! Happy birthday, T!