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Kim Kardashian was embarrassed and humiliated when she showed up at a grown folks party dressed as a creepy Marvel comic book character.

The 42-year-old mom-of-4 apparently didn’t check the dress code before she showed up at Tracee Ellis Ross‘ elegant 50th birthday party dressed up as Mystique from X-Men.

Kim posted an Instagram photo with the caption: “That time I showed up to a birthday dinner in full costume when it wasn’t a costume party!”

Kim then wished “Happy Birthday to the most beautiful soul @traceeelliseross.”

Tracee seems to be laughing at Kim in the photo.

Kim also shared photos of her children North West, 9, Chicago, 4, Saint, 6, and Psalm, 3, dressed as Aaliyah, Sade, Snoop Dogg and Eazy Z for Halloween.

Someone should tell Kim that grown folks stop dressing in Halloween costumes after age 30.