Kim Kardashian took North West, Penelope Disick, and a bunch of their friends out to Las Vegas on Saturday night for Katy Perry‘s concert — and the fam had the time of their lives!

The Firework singer is doing her PLAY residency in Sin City right now, and so the Kardashians star took the young crew with her to the desert metropolis to enjoy the music and take in the sights and sounds!

It all started with a private plane ride to Las Vegas on “Air Kim,” complete with Katy Perry-inspired mocktails for the girls. Then, the Hulu star and her group showed up at the concert to watch Katy sing a medley of her hits and dance the night away! But the fun didn’t end there. You didn’t think this would just be a normal concert, did you?!

At one point, 9-year-old North was called on stage to join Perry in the midst of the performance. Penelope and a few other friends went up, too! First, Katy gushed over North’s rising star in the social media world, saying she was a big fan of the little girl “after seeing all your TikToks.” LOLz!

Then, the Roar singer HIGHlariously asked:

“I know your name, but what’s your name.”

The crowd loved that one!

After North responded, and gave her age, Katy said that was her age when she first decided to become a singer! Connecting the dots to today, the superstar songstress asked North what she wanted to be when she grows up. North delivered a one-word answer that made everybody laugh:

“Everything!”
Ha!!

You can watch the moment for yourself (below):

Katy then held a “Walk Off” competition where North and the rest of the young people on stage did a dance-off contest to showcase their moves. Kim’s daughter and another fan won the competition, and both kids reportedly bounded off the stage with pizzas for their efforts. Love that!

At the end of the night, Kim and North went back stage to meet with Katy and other stars. During the meeting, Katy got Kim in a selfie video that the singer later posted to her Instagram account. In the clip, Perry ponders:
“So what did you think?”

The SKIMS mogul responded:

“Honestly, I’m the biggest Katy Perry fan. I’m not just saying that because you’re here, because I don’t associate you with all this. It’s the memories…”
Then, Katy asked the big question:

“Can I finally be a sister?”

Kim replied:

Katy wasn’t done there, though! Also on Saturday night, the residency was graced with the presence of two other big stars: Paris Hilton and Sia! In another IG video, Katy asked Paris to describe the performance in just two words, to which the Simple Life alum replied with her iconic phrase:
“That’s hot.”

That it was!

Ch-ch-check out that moment and more (below):

And here are even more highlights from Kim’s time with the kids out in Vegas:
Kim and North had a great weekend out in the desert! / (c) Kim Kardashian/Instagram
Penelope joined in on the fun, too! / (c) Kim Kardashian/Instagram
There you have it, Perezcious readers!

That made for quite a weekend night!!

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[Image via Kim Kardashian/Instagram]