Kendall Jenner isn't shy about talking about her very first kiss.

The 20-year-old supermodel recently revealed on her app how she got her first kiss when she was in the fifth grade, and even named the lucky guy -- Chad Wilcox, the son of actor Larry Wilcox. Larry was co-stars with Kendall's father -- who was then known as Bruce Jenner -- on the police show CHiPs.

"It happened in a shower," Kendall shares. "I was with one of my friends from elementary school, Jessica. The kiss was with a kid I had THE biggest crush on -- shout out to Chad Wilcox! I crushed on him for so long. I was obsessed. Jessica actually did, too, haha."

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Kendall says the kiss happened when they played a game of Truth or Dare at her mother Kris Jenner's house.

"Kylie was so nosy ... We ended up in my bathroom because it was the only room with a lock!" she explains. "Finally, we got to the Truth or Dare kissing. Jessica and I didn't want to do it in front of each other so Chad and I went in the shower behind the curtain. And that's how the magic of my first kiss went down!"

Judging from his Instagram, Chad is still quite the looker.

And to get a sense of what Chad looked like back in his elementary school days, check out this adorable throwback pic he posted.

... Too cute!

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ET caught up with Kendall at New York Fashion Week in September, when she explained why she's never publicly dated anyone, unlike her famous sisters.

"It's not always easy, but I don't know, I just like to keep my private life private," she said. "I try my best, but at the same time, I try not to let being out with someone affect my everyday life. Like, if I want to go out and grab a smoothie with a friend who's a male, I'm not gonna let the paparazzi stop me from doing that and living my life and just being a normal person."

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