It looks as though Kim Kardashian is not a huge fan of her sister Kylie Jenner's rumored beau, Tyga. According to a new report, Kardashian allegedly disapproves of her 17-year-old sister's relationship with the rapper, mostly because he recently dumped his baby mama and her good friend, Blac Chyna.

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According to TMZ on Tuesday, Kardashian made her feelings quite clear when she supposedly cropped Tyga out of a group photo of her, Kris jenner, French Montana, Khloe Kardashian and Jenner in an Instagram pic that she shared with her fans.

What's more, sources close to the family say that Kardashian is upset that Jenner is violating an important "code."

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A source tells the site, "Kim is saying her sister in a way is violating "the code" -- you don't date the ex of someone who's close to you or a family member. That said ... Kim makes it clear she loves Kylie and has her back, but she thinks Kylie is making a bad choice."

Meanwhile, Jenner herself has sparked engagement rumors as she was spotted stepping out with a new ring on her engagement finger.

According to OK! Magazine last Tuesday, the 17-year-old reality television star stepped out of a hair salon in Los Angeles, California rocking both grey highlights and some new bling on her finger. Kylie herself hasn't commented on the ring, although the gossip site is speculating that she might be tying the knot with Tyga.

So far, Jenner has not made any comments on whether or not she is indeed dating Tyga.

Tags: Kylie Jenner Kim Kardashian tyga