In a video she uploaded to Snapchat, Kylie serenades Tyga with a sultry version of "Happy Birthday" as mom Kris Jenner sings along in the background and tells him to make a wish.
It's kind of odd that Kylie and Kris were the only ones who celebrated with him, given that the family generally does things like birthdays in a big group. For Khloe Kardashian's boyfriend James Harden's birthday, for example, they rented a yacht and the whole crew came along for a celebration complete with fireworks.
That being the case, it seems strange that Kylie and Kris were the only two reppin' the famous fam, but maybe everyone was just busy?
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Gallery | Kylie Jenner and Tyga's Cutest Moments