The reality TV stars joined Sanchez, soon-to-be Mrs. Jeff Bezos, at the event. Khloe opted for a sleek look with her hair pulled back and oversized sunglasses, while Kim stunned in a black feathered bustier. Lauren, the star of the night, turned heads in a form-fitting gray dress.

Also present were their mother, Kris Jenner, along with Kathy Hilton, model Miranda Kerr, and jewelry designer Jennifer Meyer.

Khloe shared her congratulations on Instagram, writing, “Congratulations @laurenwsanchez on your book, The Fly Who Flew To Space, inspired by her battle with dyslexia and her love for flying. This is such a creative and inspiring story, sparking imagination while encouraging us all to aim high.”

Khloe continued, thanking Sanchez for her vulnerability and for creating a book that could make children feel seen. “Order @theflywhoflew for yourself or your little ones—such a sweet and uplifting read, teaching lessons about determination, resilience, and self-belief!”

Lauren posted photos from the event, expressing her gratitude. “Launching my book has taught me the value of strong friendships. Women who make space for each other, who lift each other up. Thank you @krisjenner for hosting such a special afternoon with all the girls to support @theflywhoflew. I’m over the moon!”

Among those tagged in the photos were October Gonzalez, Victoria Trilling, Baby2Baby Co-CEO Kelly Sawyer, stylist Jamie Mizrahi, photo coach Elena S. Blair, and entrepreneur Tina Chen Craig. Other attendees included Xochitl Gomez, Elsa Marie Collins, Lucy Aragon, and Amanda Diaz.

This event follows Kim’s recent discussion about parenting a child with learning differences. Kim, 43, whose daughter North West was diagnosed with dyslexia, shared a clip on her Instagram Stories of Sanchez speaking on The View about her children’s book and her own struggles with dyslexia.

Kim commented, “I’m reposting this not just because I love her, but because every mom dealing with their kids’ learning challenges needs to know that it will be okay.”

North, now 11, had revealed her dyslexia diagnosis during a TikTok livestream last year. “Guys, I have dyslexia. Do you know what that is?” she asked her followers. Kim responded, half-jokingly, “Northie, you’re spilling too much tea,” and later urged her daughter to end the livestream, saying, “You’re saying way too much. I avoid talking about some of these things on purpose.”

Meanwhile, North, whose father is Kanye West, has expressed early ambitions of becoming a businesswoman like her parents, with plans to one day take over Yeezy and Skims. In an interview with i-D magazine last year, she shared, “One day, I want to own Yeezy and Skims, and be a business owner.”

Until then, North has simpler goals, like earning pocket money by walking dogs to fund her art supplies. “When I’m 13, I want to walk dogs to buy art supplies, because everything here is so expensive,” she said.

North also revealed that her biggest style icon is herself, proudly adding, “I love doing hair, and I got to do my own edges for this shoot.”