It looks as though Kris Jenner might not be pleased with this one. It is being rumored that 17-year-old Kylie Jenner is dating rapper and father Tyga.

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According to Star Magazine on Friday, the 24-year-old rapper has been dating Kim Kardashian's sister after he split up with singer Blac Chyna.

A source tells the web site: "Kylie and Tyga started hooking up even before he split from Black Chyna. She played a part in his split from his fiancé."

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The insider adds that Kylie's friends and family are worried and think that her relationship with the rapper might be a bad influence on her. She's been reportedly partying at clubs with Tyga with other celebrity bad boys such as Justin Bieber and Chris Brown.

The source added, "She's too young to even begin to comprehend the magnitude of her actions. In a few years, this will come back to haunt her."

Meanwhile, it's also being reported that Kylie is supposedly jealous of her sister Kendall's modeling career.

According to British magazine Reveal on Monday, Kylie is having a hard time trying to find her "niche" while coping with her sister's success, as Kendall has managed to land lucrative modeling contracts in the fashion world, which include Givenchy, Marc Jacobs and Chanel.

"Kylie's growing increasingly jealous of Kendall and it's driving a wedge between them," a source close to the Jenners said, according to the Irish Independent.

The source added, "Privately Kylie has been complaining that she needs to find a way into the spotlight. She feels like all of her siblings have a niche and she's left out. Mom Kris [Jenner] is trying to find ways to get Kylie in the public eye. She's her 'shy one' and Kris suggested acting classes, but Kylie hasn't taken to the idea."

Tags: Kylie Jenner