The 20-year-old model admitted in an interview with W magazine to once liking the 22-year-old singer while naming her celebrity crushes as a kid.
"Benny 'The Jet' Rodriguez," Jenner began. "He was the kid from The Sandlot. He was like the main little hot kid in The Sandlot. I'm trying to think of other kids I had crushes on."
"I was more into the Disney kids [than pop stars]. Like, I think I had a crush on Zack and Cody from Suite Life of Zack and Cody," she added of actors Dylan and Cole Sprouse. "Oh, Justin Bieber was like the pop star of my time. I feel like I must have had a 12-year-old crush on him. Not anymore though!"
Jenner and Bieber are close friends who were romantically linked in late 2014 and early 2015. The model denied she and the singer are more than pals in a November 2014 interview with Nightline.
"No. He's a longtime friend of our family. Everybody loves to assume things," she said at the time. "I'm not [in a relationship]. Truly, I'm focusing on my career. If it comes, it comes."
Jenner has since been linked to One Direction singer Harry Styles and rapper Tyler the Creator. She and Styles re-sparked romance rumors in September after they reunited for a couple dates over Labor Day weekend.
"[They] are trying to spend time together again," a source told People after the outings. "They're rekindling their old romance and Kendall's so excited and happy about it. She's always cared about Harry."