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Cindy Crawford, Kaia Jordan Gerber, Presley Walker Gerber, Rande Gerbe

Donato Sardella/WireImage

Please tell us this is a Christmas card. Oh no, just a casual night out.

Just when we thought Cindy Crawford couldn't get any more beautiful, the supermodel stepped out for a book party in West Hollywood, Calif. with a few familiar (and gorgeous) faces.

Held at Eric Buterbaugh Floral, the celebration in honor of Crawford's memoir Becoming featured appearances from her husband Rande Gerber and their kids Presley Gerber, 16, and Kaia Gerber, 14.

"Look who came out last night to support me! ❤," she wrote on Instagram Saturday afternoon. "So much fun celebrating my book tour winding down with my LA friends! Thanks @ericbuterbaugh and @meaningfulbeauty for the great party! #BecomingCindy."

Kaia chose to work a Balmain X H&M dress that got the approval from guest Joe Zee. Meanwhile, her older brother looked handsome in a casual black zip-up jacket and cargo pants.

Kaia Jordan Gerber, Presley Walker Gerber

Donato Sardella/WireImage

Cat Deeley, Tyra Banks, Lisa Rinna and Elizabeth Berkley also showed their support for Crawford by attending the weekend bash.

Becoming is the chance for Cindy to chronicle her life and career while at the same time sharing stories and lessons she's learned along the way. One of the most buzzworthy parts of the best-seller is when the 49-year-old opened up about her relationship with ex-husband Richard Gere.

While she briefly relived the "quickie wedding" that occurred in Las Vegas with a few friends, Cindy explained that she didn't want to share too much about the relationship.

"It's not something I want to share," she explained in an issue of Porter. "If I felt that there was a great good that could come of it, I might have shared more, but I didn't think that there was anything for other people to learn or benefit from. And I wanted to be respectful."

She added, "Look, I learned a lot from Richard. I learned about how to be famous again. Again, that's not a universal lesson. And a lot of the personal things, everything else I learned from that, were from me."

Becoming is available in stores now.