We hope you're sitting down, because we've got news that's sure to rattle you to your core and make you question everything you thought you knew about the world:

Posted in: Kim Kardashian

All this week, the E! network has been offering teasers and previews for the upcoming two-part Keeping Up With the Kardashians special that will focus on the family's reaction to news of Bruce Jenner's sex change.

Via the nearly-constant stream of clips posted by E!, we've already seen Bruce showing Kim his toenail polish and sharing a tender moment with Kendall. We've seen Khloe storm out and Kris Jenner crying over her ex's transition.

Posted in: Bruce Jenner