The son of the 1976 Summer Olympics decathlon champion Bruce Jenner and actress Linda Thompson, he was born and raised in Los Angeles, California.
In 2005, Jenner appeared in the reality television series The Princes of Malibu, which additionally featured his eldest brother Brandon Jenner and his friend Spencer Pratt.
In 2007, he began dating Lauren Conrad, a primary cast member of The Hills, and subsequently came to prominence after being cast in the series during the second season. Their brief relationship ultimately ended his friendship with Pratt.
However, it was cancelled after its inaugural season after receiving underwhelming ratings.
In 2009, Conrad left The Hills to pursue other career opportunities, and was replaced by Jenner’s ex-girlfriend Kristin Cavallari. Their rekindled relationship became the central focus of the series until its conclusion the following year.