Meet Burt Jenner, Caitlyn Jenner's Oldest Son

In addition to being a professional truck and race car driver, Burt Jenner has a website, Jenner Racing, as well as his own YouTube channel focused on his career. He also owns a doggie daycare in Los Angeles called West LA Dogs (per The Sun). As for his personal life, Burt has two children — William Behr and Bodhi — whom he shares with his girlfriend, Valerie Pitalo. While Burt has mostly stayed out of the spotlight, he has made brief appearances on "Keeping Up with the Kardashians" and "I Am Cait." But Burt says that Caitlyn's participation in the Kardashian show ultimately hurt their relationship.

"I think the nail in the coffin for the relationship was the beginning of the TV show," Burt told the The Washington Post. "There was a you-aren't-part-of-this kind of thing. Kris made the choice to make a good TV show that was in their image and brand."

Since Caitlyn's transition, however, parent and son couldn't be closer. "Because I think he's realized that family means a lot to him. Just like anybody else in life, all you got is family. So, that's brought us much closer," Burt told Entertainment Tonight. He added that Caitlyn "is a better person. Honesty is always the building block for any relationship, and at least we have that now."