my favorite photo for all 40 mill of you. genuine happiness...taken by lil Ky @490tx

A photo posted by Kendall Jenner (@kendalljenner) on



How does a Kardashian celebrate a momentous occasion? By taking off her top of course!

Kendall Jenner kept in the Kardashian/Jenner tradition by showing some nip to her flock of fans upon hitting 40 million Instagram followers.

Along with the booby-baring snap, the 20-year-old wrote, "My favorite photo for all 40 mill of you. genuine happiness..."

We like to celebrate milestones with a nice dinner or buying ourselves a cute gift -- not showing off our tits to strangers. But maybe that's why we will never be a Kardashian?

The photo was taken by Moises Arias, whom you may remember as the young buck who posed shirtless with preteen Willow Smith and caused all sorts of controversy in May 2014.