Jenner, 18, stole her sister's phone Friday and set up an account for the dating app Bumble – documenting it all on Snapchat.
"I have Kourtney's phone. I have her password. Should I go threw her text messages and read them to your guys?" Jenner asked in one snap. In another, she opted to set Kardashian, 37, up with a Bumble profile instead – choosing some flattering photos for her sister.