Kourtney Kardashian took Penelope and North out for a girls night on Friday.
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The terrific trio went to see Ariana Grande perform at The Forum.
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It was perfect timing since Kim Kardashian announced that her fourth baby was born just a few hours before.
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The KarJenners are all big fans of Ariana Grande and have been photographed with her on several occasions.
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Kim too North to the Dangerous Woman show in 2017, and they were invited to visit Ariana backstage.
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Kourtney famously dressed up as Ariana Grande last Halloween - the ultimate tribute or what?
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Kris Jenner is also a big fan of Ari, and was even invited to star in the video to Thank U, Next.
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The Kardashians are often seen with each other's kids, and North and Penelope are not just cousins but best friends!
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