Look away, Blac Chyna!

The new mother has a hot-and-cold relationship with her future sister-in-law, Kylie Jenner, and that's mainly because the 19-year-old is now dating Chy's ex and first baby daddy, Tyga, 27.

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The model and business owner, 28, has allegedly fought with Ky in the past about her involvement with Chy and T's four-year-old son, King Cairo — which is why we bet she was NOT happy to see her latest Snapchat update.

kylie jenner snapchat

The above photo features a gingerbread house (gifted by Kylie's momager, Kris Jenner, 61) with the names of the makeup mogul and Tyga, but also includes little King's!

Fortunately, however, the Kardashian-Jenner matriarch gave a similar gift to Chyna and her fiance, Rob Kardashian, 29 — and didn't forget about the boy.

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We're sure she didn't mean any harm.

See more photos of Kylie and Tyga with King in the gallery!