They may have their own clothing lines, fashion campaigns and millions of Twitter followers, but Kendall and Kylie Jenner spent the weekend celebrating a typical teen milestone: their high school graduation.

OK . . . well maybe they didn't celebrate it like typical teens.

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Ryan Seacrest hosted the star-studded bash for Kylie, who graduated this year, and Kendall, who graduated in 2014.

Big sisters Kim, Khloe and Kourtney Kardashian were all in attendance, as well as Kanye and North West, and of course, mama Kris Jenner.

Tons of silly photo booth-style shots posted by Kim on Instagram show the reality show family having a blast.

"I love my mom for doing this," Kylie later shared on Instagram. "Thank you for making this experience as normal as possible for me."