Yesterday, Kendall Jenner got a true surprise from the Kardashian family: a high school graduation party…one year after she graduated high school. The 2014 grad and her sister Kylie (class of 2015) shared a crazy shindig complete with synchronized swimming (naturally):

Swan inflatables and balloons:

Some diploma flaunting by Kylie:

A lot of dancing:

And a photo booth (because as both sister Kim and Taylor Swift have proven, it's never a party without one):

Gigi Hadid joined in the fun, too:

Party host Ryan Seacrest got involved:

And, of course, no Kardashi-bash would be complete without presents:

Better late (and insane) than never, really.