Hailey Baldwin and Kendall Jenner. Picture: YouTube Screenshot

Kendall Jenner has confessed to making fake accounts on Instagram to stalk her ex-boyfriends.

The 'Keeping Up With The Kardashians' star - who has dated the likes of Harry Styles, ASAP Rocky and Blake Griffin - has admitted to starting new accounts on photo-sharing site Instagram so she can check what her exes are up to.

Taking part in a lie detector test with Hailey Baldwin, she was asked: "Have you ever created a fake Instagram to look at what your ex is doing?"

And Kendall - who was taking part in a special Carpool Karaoke with Hayley - knew she was in hot water, joking back, "You know the answer to this," before adding: "Yes!"

Meanwhile, Kendall previously confessed she wants to "run away" and get married.

Speaking to her friend Jen Atkin, she said: "I literally want to run to the city hall and get married and just be like 'F*** it, let's go right now. Just like, spur of the moment."

Jen was puzzled by the brunette beauty's revelation as she doesn't have a "type".

She said: "Who are you going to marry? You don't have a type at all."

To which Kendall replied: "I don't have a type - you cute, you cute. Like, who am I going to marry? A piece of advice that my dad always told me is that in a relationship, when you meet someone young, the hardest thing to do is change with them."

The model has never been one to be open about her love life and she recently admitted her reluctance to share details led to people thinking she was bisexual. 

She said recently: "I like my private life. I think it's because I'm not like all my other sisters, who are like, 'Here's me and my boyfriend!' So it was a thing for a minute because no one ever saw me with a guy. I would always go that extra mile to be low-key with guys, sneaking around all the time. You don't want to, like, look crazy. I don't think I have a bisexual or gay bone in my body, but I don't know! Who knows?! I'm all down for experience - not against it whatsoever - but I've never been there before."