Sorry, Kylie! Kris Jenner Secretly Planning To Humiliate Tyga On 'KUWTK' -- Thinks He's 'Using' Daughter For Cash

Never ones to stay offscreen for long, the Kardashian and Jenner families are filming the 11th season of their E! reality series— and Kylie and rapper boyfriend Tyga's relationship drama will be a central storyline, RadarOnline.com can exclusively reveal.

According to insiders, cameras are finally catching Kris and the older sisters' skeptical reactions to the precocious 18-year-old's controversial romance. (Before Kylie became a legal adult, the family remained mum about the relationship onscreen.)

"Everyone says they're worried that Tyga's using Kylie for her money," a source tells RadarOnline.com of the "Rack City" rapper, who insiders say is worth about $4 million to the Kardashian/Jenner clan's estimated $300 million.

Kylie's controlling momager is especially suspicious, the source adds. "Kris doesn't trust him."

As RadarOnline.com previously reported, Tyga actually leased his girlfriend of more than one year's birthday present, a $320,000 Ferrari.

"The family later discovered that the car was not only leased in Kylie's name, but she paid for half of the down payment!" the insider claims.

It seems all the disapproval may be affecting the teen's romance.

The onetime lovebirds "are at each other's throats" fighting over Kylie's growing career, a source recently told RadarOnline.com. "If things keep going the way that they are between them, they will be done in no time."