Kylie Jenner, Tyga: Rapper Reportedly Dating 17-Year-Old 'KUWTK' Star [VIDEO]

Underage Kylie Jenner is reportedly dating a rapper.

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For the last several months, Jenner has been spending tons of time with Tyga, 24, and now, a source claims the pair is officially dating -- despite the fact that Jenner is just 17-years-old.

“Kylie and Tyga started hooking up even before he split from Black Cyna,” a close source revealed to Star Magazine on Sept. 17. “She played a part in his split from his fiancee.”

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Black Cyna, Tyga's ex, is the father of his young son -- and the close friend of Jenner's sister, Kim Kardashian. In fact, Tyga and Black Cyna attended Kardashian's wedding to Kanye West in May of this year.

Following Star Magazine's report, Tyga took to Twitter, where he denied he and Jenner were a couple.

"Don't believe the rumors," he wrote. "[I] been friends with the family forever. Were all just friends." He also told fans, "I hate blogs."

Still, Jenner and Tyga have continued to appear together publicly. On Sept. 22, according to a Daily Mail report, the pair was seen at Universal Studios Halloween Horror Nights in Studio City, Calif.

Earier this summer, Jenner and Tyga made headlines after he reportedly offered her a shot during her birthday celebration in Los Angeles. “Take a shot, take a shot!” he allegedly told Jenner, before handing her a bottle of booze.

Before fans saw whether or not Jenner drank, the video cut off.

Check out that video below.