While Paris uploaded the photo months ago, it wasn’t until this weekend that fans began speculating the singer could be present in it.
’Who's that in the backseat???' one user wrote.
Another wrote: 'Omg is that michael in the back????'
One fan went as far as creating a video using a still of the photo and layering the word ‘believe’ over the top. The video has been viewed more than 550,000 times.
But not everyone is convinced. Another Instagram user pointed out that the image is either 'a silly hoax', or the figure is actually the car’s headrest.
Michael Jackson died in 2009 from a heart attack brought on by prescription drugs.