Say hello to Bumble’s newest member -- Kourtney Kardashian!

In a series of Snapchats on Friday, Kylie Jenner revealed that she stole Kourtney's phone and signed her oldest sister up for the popular dating app.

"I think [Kourtney's] gonna kill me if I read her text messages, so I think I’m gonna sign her up for Bumble," Kylie quipped in one of the Snapchat videos. "I think she needs to be on Bumble."

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The oldest Kardashian sister has been single since splitting from her longtime on-and-off-boyfriend, Scott Disick, in July 2015. 

Kourtney, 37, did have a problem with Kylie's sneaky move, but it wasn't for the reason you're probably expecting. "These are the photos you pick?" the mom-of-three asked as she flipped through the profile, which even included that she graduated with a Bachelor's Degree in Theatre Arts and a minor in Spanish from the University of Arizona.

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The 18-year-old reality star assured Kourtney that dating apps are a totally "normal" thing to be on these days. "Like, everybody's doing it. I think it's cute," Kylie explained in another snap. "But girls make the first move, so you can make the first move."

At least the Kylie Lip Kit creator had a very good reason for signing Kourtney up for a dating site without telling her -- she just had to "take care of her big sister." OK, that's sweet!

Maybe Kylie will be making a profile for herself as well? The youngest Jenner sister recently split from Tyga and is rumored to be dating another rapper, PartyNextDoor. Find out more in the video below.