What does Facebook's Doppelgänger Week look like? Depending on who you are, it could look like a Simpson, Michael Jackson or, if you're lucky, Angelina Jolie.
In order to celebrate Doppelgänger Week, Facebook users switch their profile pictures to famous people they have been told they resemble.
The trend appears to be catching on like wildfire, so much so that its success is being compared to that of the "bra colour" status updates. The recent viral trend had women updating the style of bra they were sporting in order to raise awareness for breast cancer.
The news feed announcing Doppelgänger Week on the social networking site this week read:
"It's Doppelgänger week on Facebook; change your profile picture to someone famous (actor, musician, athlete, etc.) you have been told you look like. After you update your profile with your twin or switched at birth photo then cut/paste this to your status."
For those who have never been compared to a celeb, the site has an application, Face Double, that will generate their long-lost celebrity brethren.