Kim Kardashian is said to be "jealous" of the relationship between her daughter North West and Kanye West's new wife Bianca Censori.
The SKIMS founder, 42, has been open about her struggles co-parenting with her ex-husband and a source has said his new marriage has thrown "another wrench" in the works.
Kanye and 28-year-old Bianca tied the knot in a private ceremony back in January and the Yeezy architect has since been seen getting close to her husband's family.
Bianca and North were spotted holding hands at the rapper's 46th birthday party earlier this month and were also seen chatting to one another while on holiday in Japan.
While the 10-year-old seems to be a big fan of her step mother, Kim reportedly doesn't feel the same way.
"Kim thinks Bianca is getting too close to her daughter," a source said and added that she is "definitely jealous" of Kanye's new wife.
They continued: "This woman has done stuff to make herself look like Kim. It's already a nightmare co-parenting with [Kanye]; this is just another wrench."
However, the source said North thinks her step mother is "super cool," telling Star Magazine that it "gets under Kim's skin".
The Mirror has approached Kim's representative for comment.
As well as North, Kim and Kanye share son Saint, seven, five-year-old daughter Chicago and son Psalm, four.
Kim was previously reduced to tears as she admitted co-parenting with Kanye, legally known as Ye, can be "f***ing hard".
During an appearance on the Angie Martinez IRL podcast, Kim said she has tried to protect her children from their father's controversial behaviour.
"I had the best dad, and I had the best memories and the greatest experience and that’s all I want for my kids as long as they can have that.
"That's what I would want for them," Kim said.
She added: "If they don't know the things that are being said or what's happening in the world, why would I ever bring that energy to them?
"That's really heavy grown-up s*** that they're not ready to deal with."
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