There's a new conspiracy theory that Kylie Jenner actually died back in 2013...

At the start of this week, rumours were flying around that Avril Lavigne had passed away and was replaced with a body double. So naturally, skeptics were quick to put the rest of Hollywood under the microscope to work out who else may have suffered the same fate.

One of these people is Kylie Jenner.

It's no secret that she has changed a lot since her teenage years, more than what puberty will do to you, and it is this fact that people are scrutinising.

Is pre-2013 Kylie the same as post-2013 Kylie? That's the question.

This was the tweet that started it all:

As usual, users were quick to jump onto it and give their two cents...

Seems legit...