The photo showed Kardashian in a pink dress she appeared to be altering, with her dark locks tied up in a messy top knot.

Neutrally posing for the camera, it was not until later that Kardashian noticed a figure in the reflection.

It appeared to show the reflection of someone gazing in from outside a window, despite the reality star ensuring that she was alone.

A strange shadow was seen in the background of Kim Kardashian’s photo. Credit: Instagram / kimkardashian

A close up view of the shadow Kardashian spotted. Credit: Instagram / kimkardashian

“Soooo I took this pic last week when I was alone and now going through my phone I am freaking out noticing a woman in the window,” she captioned the photo.

Fans of Kardashian’s took to the comments to speculate on the bizarre detail.

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“It looks like a side view of a woman wearing a Victorian-era bonnet 😮,” one said.

“That’s freaky!” a second wrote, as another speculated: “It looks like she is from another time based on her pilgrim bonnet-looking silhouette”.

Kim Kardashian. Credit: Stefanie Keenan/Getty Images North America

“Definitely a woman in the window,” said another.

“Kimberly are you good??” a fan asked.

A commenter said, “This is a case for the FBI”.

“OK wait that’s actually spooky,” added another user.