"We would find little things and think, 'This isn't normal.' For a minute, we were like, 'Okay, is he cheating?' And then we'd say, 'I don't think so'". I think about that.
Before Caitlyn Jenner transitioned in 2015, she spent decades hiding her true self - and kept secret her penchant for dressing up in women's clothes.
"My mom would make us do it", she explains, "She would have a nail artist come to the house once a week and she would make us get our nails done".
Kendall also spoke to the magazine about buying her dream vehicle, her relationship with her family, her stance on the rumours that are constantly being spread about her, and more.
OK, so she may just wants to basically troll dating apps, but-tomato, tomato. As the reality show documents her life, fans of Kylie will get to see more of her without being eclipsed by her older siblings.
They're sisters - we know that - but a few years ago, they didn't look like twins. "I mean, I'm a girl and I like being a girl, but I've just never been into it like they have", she says in reference to her sisters' brands, which are usually interpreted by the public as more stereotypically feminine. "I've always connected with guys more".
Kendall Jenner admits her "heart dropped" when she first saw Caitlyn Jenner dressed as a woman.
"Since - let's not kid ourselves - everyone wants to know, Kris and I had good and frequent sex at the beginning." the excerpt read. I'm doing my thing, I'm having fun, I'm being young.
The eight-episode series is scheduled to premiere in the coming months and will include the other members of the Kardashian family and Kylie's friends, with cameras capturing her at home, work and everywhere.
Here is the proof that more than one Kim Kardashian exists in the world.