Kylie Kristen Jenner was born on August 10, 1997, in Los Angeles, California. The youngest daughter of former Olympic decathlete champion Caitlyn Jenner (then known as Bruce Jenner)^[b][17] and television personality and businesswoman Kris Jenner (née Houghton).^[18] Jenner has an older sister, Kendall and eight older half-siblings. From Caitlyn’s side of the family, she has three older half-brothers―Burt, Brandon, and Brody Jenner―and one older half-sister Casey.^[19] From Kris’ side of the family, Jenner has three older half-sisters―Kourtney, Kim, Khloé―and one older half-brother Rob Kardashian.^[20]

Jenner attended Sierra Canyon School, where she was also a member of the cheerleading team. Jenner claims to have performed in plays while attending school, along with community plays.^[21] In 2012, she became homeschooled and enrolled in an at-home education program, from which she graduated with a high school diploma in July 2015 from Laurel Springs School in Ojai, California.^[22][23]