Kim Kardashian had a major scare upon inspecting a recent selfie, but her terror immediately became Instagram's playground.

The reality TV star posted a photo she took of herself while she was completely alone and pointed out a mysterious woman's silhouette in the window.

She wrote:

"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."

You can see the photo featuring the uninvited guest below.

A couple of fans shared the entrepreneur's fear.

@kimkardashian/Instagram

But although the entrepreneur was "freaking out," most viewers of the snap had some hilarious theories as to who was behind the surprise guest appearance.

@kimkardashian/Instagram

@kimkardashian/Instagram

@kimkardashian/Instagram

@kimkardashian/Instagram

However, thanks to some eagle-eyed Instagram detectives, the mystery was soon solved.

@kimkardashian/Instagram

@kimkardashian/Instagram

@kimkardashian/Instagram

@kimkardashian/Instagram

@kimkardashian/Instagram

Oops.